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If the roots of the equation a x^2-b x+c...

If the roots of the equation `a x^2-b x+c=0a r ealpha,beta,` then the roots of the equation `b^2c x^2-a b^(2x)+a^3=0` are `1/(alpha^3+alphabeta),1/(beta^3+alphabeta)` b. `1/(alpha^2+alphabeta),1/(beta^2+alphabeta)` c. `1/(alpha^4+alphabeta),1/(beta^4+alphabeta)` d. none of these

A

`(1)/(alpha^(3) + alphabeta), (1)/(beta^(3) + alphabeta)`

B

`(1)/(alpha^(2) + alphabeta), (1)/(beta^(2) + alphabeta)`

C

`(1)/(alpha^(4) + alphabeta), (1)/(beta^(4) + alphabeta)`

D

none of these

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To solve the problem, we need to find the roots of the equation \( b^2c x^2 - ab^2x + a^3 = 0 \) given that the roots of the equation \( ax^2 - bx + c = 0 \) are \( \alpha \) and \( \beta \). ### Step 1: Understand the given equations The first equation is: \[ ax^2 - bx + c = 0 \] with roots \( \alpha \) and \( \beta \). From Vieta's formulas, we know: - \( \alpha + \beta = \frac{b}{a} \) - \( \alpha \beta = \frac{c}{a} \) ### Step 2: Rewrite the second equation The second equation we need to analyze is: \[ b^2c x^2 - ab^2x + a^3 = 0 \] ### Step 3: Normalize the second equation To make it easier to work with, we can divide the entire equation by \( a^3 \): \[ \frac{b^2c}{a^3} x^2 - \frac{b^2}{a} x + 1 = 0 \] ### Step 4: Identify coefficients Let: - \( A = \frac{b^2c}{a^3} \) - \( B = -\frac{b^2}{a} \) - \( C = 1 \) ### Step 5: Use Vieta's formulas for the new equation The sum and product of the roots \( x_1 \) and \( x_2 \) of the quadratic equation \( Ax^2 + Bx + C = 0 \) are given by: - \( x_1 + x_2 = -\frac{B}{A} = \frac{b^2/a}{b^2c/a^3} = \frac{a^3}{ac} = \frac{a^2}{c} \) - \( x_1 x_2 = \frac{C}{A} = \frac{1}{b^2c/a^3} = \frac{a^3}{b^2c} \) ### Step 6: Find the roots Now, we need to express the roots in terms of \( \alpha \) and \( \beta \). We know: - \( \alpha + \beta = \frac{b}{a} \) - \( \alpha \beta = \frac{c}{a} \) Using these, we can express: \[ x_1 = \frac{1}{\alpha^2 + \alpha \beta}, \quad x_2 = \frac{1}{\beta^2 + \alpha \beta} \] ### Step 7: Finalize the answer Thus, the roots of the equation \( b^2c x^2 - ab^2x + a^3 = 0 \) are: \[ \frac{1}{\alpha^2 + \alpha \beta}, \quad \frac{1}{\beta^2 + \alpha \beta} \] Comparing with the options provided, we find that the correct answer is: **Option b: \( \frac{1}{\alpha^2 + \alpha \beta}, \frac{1}{\beta^2 + \alpha \beta} \)**.

To solve the problem, we need to find the roots of the equation \( b^2c x^2 - ab^2x + a^3 = 0 \) given that the roots of the equation \( ax^2 - bx + c = 0 \) are \( \alpha \) and \( \beta \). ### Step 1: Understand the given equations The first equation is: \[ ax^2 - bx + c = 0 \] with roots \( \alpha \) and \( \beta \). ...
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CENGAGE ENGLISH-THEORY OF EQUATIONS-Single Correct Answer Type : Exercise
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  2. If alphaa n dbeta are roots of the equation a x^2+b x+c=0, then the ro...

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  3. If the roots of the equation a x^2-b x+c=0a r ealpha,beta, then the ro...

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  4. If a(p+q)^2+2b p q+c=0 and a(p+r)^2+2b p r+c=0 (a!=0) , then which one...

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  5. If alpha,beta are the nonzero roots of a x^2+b x+c=0a n dalpha^2,beta^...

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  6. If the roots of the equation a x^2+b x+c=0 are of the form (k+1)//ka n...

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  7. If alpha, beta are the roots of ax^(2) + bx + c = 0 and alpha + h, bet...

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  8. If one root of x^(2)-x-k=0 is square of the other, then find the value...

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  9. If alpha and beta be the roots of the equation x^(2) + px - 1//(2p^(2)...

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  10. If alpha,beta are the roots of x^2+p x+q=0 and gamma,delta are the roo...

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  11. The value of m for which one of the roots of x^(2) - 3x + 2m = 0 is do...

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  13. If alpha,beta are the roots of the equation x^2-2x+3=0 obtain the equa...

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  14. A quadratic equation with integral coefficients has two different prim...

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  15. One of the roots of ax^(2) + bx + c = 0 is greater than 2 and the othe...

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  16. The quadratic equations x^2""-6x""+""a""=""0""a n d ""x^2""-c x""+""...

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  19. The number of values of a for which equations x^3+a x+1=0 and x^4+a x^...

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  20. The number of value of k for which [x^2-(k-2)x+k^2]xx""[x^2+k x+(2k-1)...

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