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If sum and product of the roots of a quadratic equation are (4−32)(4-3\sqrt{2})(4−32​) and –28, respectively, then find the quadratic equati
Question

If sum and product of the roots of a quadratic equation are (432)(4-3\sqrt{2}) and –28, respectively, then find the quadratic equation.​

A.

x2(4+32)x+28=0x^2-(4+3\sqrt{2})x+28 = 0​​

B.

x2+(4+32)x+28=0x^2+(4+3\sqrt{2})x+28 = 0​​

C.

x2+(432)x28=0x^2+(4-3\sqrt{2})x-28 = 0​​

D.

x2(432)x28=0x^2-(4-3\sqrt{2})x-28 = 0

Correct option is D

Given:

Sum of roots = 4 -32 3\sqrt{2}​​

Product of roots = -28

Formula Used:

For quadratic with roots (α,β):x2(α+β)x+αβ=0(\alpha,\beta): x^2 - (\alpha+\beta)x + \alpha\beta = 0​ (Vieta’s formulas)

Solution:

α+β=432,αβ=28\alpha+\beta = 4 - 3\sqrt{2}, \alpha\beta = -28​​

Quadratic:
x2(432)x28=0.x^2 - (4 - 3\sqrt{2})x - 28 = 0.​​

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