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Question

If α,β are the roots of the quadratic equation ax2+bx+c=0,a0. Find the equation with roots kα+s and kβ+s, where k & s are constant and k0.

A
a(x+sk)2b(x+sk)+c=0
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B
a(xsk)2+b(xsk)+c=0
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C
None of the above
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D
a(x+sk)2+b(x+sk)+c=0
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Solution

The correct option is B a(xsk)2+b(xsk)+c=0
Given: ax2+bx+c=0,a0 with roots α,β
To find: Transformed Quadratic equation with roots kα+s and kβ+s

Let, t=kx+s

Since, x=αt=kα+s
x=βt=kβ+s

Replace xtsk

a(tsk)2+b(tsk)+c=0

In terms of variable x,

a(xsk)2+b(xsk)+c=0
This is required equation.

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