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Find the remainder when x^(2)-6x+5 is di...

Find the remainder when `x^(2)-6x+5` is divided by `(x+2)`.

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To find the remainder when \( x^2 - 6x + 5 \) is divided by \( x + 2 \), we can use the Remainder Theorem. According to this theorem, the remainder of a polynomial \( f(x) \) when divided by \( x - c \) is \( f(c) \). ### Step-by-Step Solution: 1. **Identify the polynomial and divisor**: - The polynomial (dividend) is \( f(x) = x^2 - 6x + 5 \). - The divisor is \( x + 2 \). 2. **Set the divisor equal to zero**: - To find the value of \( c \), we set \( x + 2 = 0 \). - Solving for \( x \) gives us \( x = -2 \). 3. **Substitute \( c \) into the polynomial**: - We need to evaluate \( f(-2) \): \[ f(-2) = (-2)^2 - 6(-2) + 5 \] 4. **Calculate \( f(-2) \)**: - First, calculate \( (-2)^2 \): \[ (-2)^2 = 4 \] - Next, calculate \( -6(-2) \): \[ -6(-2) = 12 \] - Now, substitute these values back into the equation: \[ f(-2) = 4 + 12 + 5 \] - Combine the terms: \[ f(-2) = 21 \] 5. **Conclusion**: - The remainder when \( x^2 - 6x + 5 \) is divided by \( x + 2 \) is \( 21 \). ### Final Answer: The remainder is \( 21 \).
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ARIHANT SSC-ELEMENTS OF ALGEBRA-EXERCISE(LEVEL 1)
  1. Find the remainder when x^(2)-6x+5 is divided by (x+2).

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  2. If a + b + c = 13 then, what is the maximum value of (a - 3) (b - 2) (...

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  3. If abcd=81, what is the minimum value of a+b+c+d?

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  4. Which one of the following is correct?

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  5. If a, b, c are all distinct positive numbers, then (a+b)(b+c)(c+a):

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  6. If a, b, c are the distinct positive numbers than (a+b+c)(ab+bc+ac) is...

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  7. If x+y=25 and x^(2)y^(3)+y^(2)x^(3)=25, what is the value of xy?

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  8. If x gt 0, y gt 0 then minimum value of (x+y)(1/x+ 1/y) is

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  9. If a, b, c and d are four positive numbers such that a+b+c+d=4, then w...

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  10. At what rate percent per annum will a sum of money double in 6 year ?

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  11. If x, y, z are real numbers such that x+y+z=4 and x^(2)+y^(2)+z^(2)=6,...

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  12. If x=7+4sqrt(3)\ \ a n d\ x y=1 , then 1/(x^2)+1/(y^2)= 64 (b) 134...

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  13. If a, b, c are positive real numbers, then the least value of (a+b+c)(...

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  14. If a, b are postitive real numbers such that ab=1, then the least valu...

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  15. If a, b, c all positive and not euqal, then the value of ((a+b+c)(ab+b...

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  16. If a, b, c are all positive integers, then the minimum value of the ex...

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  17. If 1lexle3 and 2leyle4, what is the maximum value of ((x)/(y))?

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  18. If a + b + c = 3, a^(2) + b^(2) + c^(2) = 6 and (1)/(a) + (1)/(b) + (...

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  19. IF 2^x=4^y=8^z and xyz=288 then 1/(2x)+1/(4y)+1/(8z)=……………

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  20. If a^x=b ,b^y=c ,c^z=a , then find the value of x y zdot

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  21. Let x, y in N and 7x+12y=220. The number of solutions :

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