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I. 6x^(2)+x-1=0 II. 8y^(2)+10y+3=0...

I. `6x^(2)+x-1=0`
II. `8y^(2)+10y+3=0`

A

`xley`

B

`xgty`

C

`xgey`

D

`xlty`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given quadratic equations and find the relation between \( x \) and \( y \), we will follow these steps: ### Step 1: Solve the first quadratic equation \( 6x^2 + x - 1 = 0 \) We will use the method of factoring. We need to find two numbers that multiply to \( 6 \times -1 = -6 \) and add up to \( 1 \) (the coefficient of \( x \)). The numbers that satisfy this are \( 3 \) and \( -2 \) because: - \( 3 + (-2) = 1 \) - \( 3 \times (-2) = -6 \) Now we can rewrite the equation as: \[ 6x^2 + 3x - 2x - 1 = 0 \] ### Step 2: Factor the equation Grouping the terms: \[ (6x^2 + 3x) + (-2x - 1) = 0 \] Factoring out common terms: \[ 3x(2x + 1) - 1(2x + 1) = 0 \] Now, factor by grouping: \[ (3x - 1)(2x + 1) = 0 \] ### Step 3: Find the roots for \( x \) Setting each factor to zero gives: 1. \( 3x - 1 = 0 \) → \( x = \frac{1}{3} \) 2. \( 2x + 1 = 0 \) → \( x = -\frac{1}{2} \) So the roots for \( x \) are \( x_1 = \frac{1}{3} \) and \( x_2 = -\frac{1}{2} \). ### Step 4: Solve the second quadratic equation \( 8y^2 + 10y + 3 = 0 \) Again, we will factor this equation. We need two numbers that multiply to \( 8 \times 3 = 24 \) and add up to \( 10 \). The numbers that satisfy this are \( 6 \) and \( 4 \) because: - \( 6 + 4 = 10 \) - \( 6 \times 4 = 24 \) Now we can rewrite the equation as: \[ 8y^2 + 6y + 4y + 3 = 0 \] ### Step 5: Factor the equation Grouping the terms: \[ (8y^2 + 6y) + (4y + 3) = 0 \] Factoring out common terms: \[ 2y(4y + 3) + 1(4y + 3) = 0 \] Now, factor by grouping: \[ (2y + 1)(4y + 3) = 0 \] ### Step 6: Find the roots for \( y \) Setting each factor to zero gives: 1. \( 2y + 1 = 0 \) → \( y = -\frac{1}{2} \) 2. \( 4y + 3 = 0 \) → \( y = -\frac{3}{4} \) So the roots for \( y \) are \( y_1 = -\frac{1}{2} \) and \( y_2 = -\frac{3}{4} \). ### Step 7: Compare the roots of \( x \) and \( y \) Now we have: - \( x_1 = \frac{1}{3} \), \( x_2 = -\frac{1}{2} \) - \( y_1 = -\frac{1}{2} \), \( y_2 = -\frac{3}{4} \) Now we compare: 1. \( x_2 = -\frac{1}{2} \) and \( y_1 = -\frac{1}{2} \): \( x_2 = y_1 \) 2. \( x_2 = -\frac{1}{2} \) and \( y_2 = -\frac{3}{4} \): \( x_2 > y_2 \) 3. \( x_1 = \frac{1}{3} \) and \( y_1 = -\frac{1}{2} \): \( x_1 > y_1 \) 4. \( x_1 = \frac{1}{3} \) and \( y_2 = -\frac{3}{4} \): \( x_1 > y_2 \) ### Conclusion From the comparisons, we can conclude that: \[ x > y \]
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MAHENDRA-INEQUALITY -Exercise (INEQUALITY)
  1. I. 6x^(2)+x-1=0 II. 8y^(2)+10y+3=0

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  2. In the following questions two equation numbered I and II are given Yo...

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  3. In the following questions two equation numbered I and II are given wh...

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  4. In the following questions two equation numbered I and II are given Yo...

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  5. In the following questions two equation numbered I and II are given Yo...

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  6. In the following questions two equation numbered I and II are given Yo...

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  7. In the following questions two equation numbered I and II are given Yo...

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  8. In the following questions two equation numbered I and II are given Yo...

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  10. In the following questions two equation numbered I and II are given Yo...

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  11. In the following questions two equation numbered I and II are given Yo...

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  12. In the following questions two equation numbered I and II are given Yo...

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  13. (i) x^(2)-7x+12=0 (ii) y^(2)+y-12=0

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  14. In the following questions two equation numbered I and II are given Yo...

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  15. In the following questions two equation numbered I and II are given Yo...

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  16. In the following questions two equation numbered I and II are given Yo...

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  17. In the following questions two equation numbered I and II are given Yo...

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  18. In the following questions two equation numbered I and II are given Yo...

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