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the three solutions

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the three solutions

by sanju09 » Wed May 19, 2010 4:39 am
The three solutions of the equation f (x) = 0 are - 4, 8, and 11. Therefore, the three solutions of the equation f (2 x) = 0 are
(A) - 2, 4, and 11/2
(B) - 8, 16 and 22
(C) - 4, 8, and 11
(D) 2, 19/2 and 7/2
(E) -6, 17/2, and 11
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by liferocks » Wed May 19, 2010 4:43 am
three solutions of the equation f (x) = 0 are - 4, 8, and 11 we can say
f(x)=(x+4)(x-8)(x-11)P(X)..where P(X) is a polynomial of x

so f(2x)=2^3(x+2)(x-4)(x-11/2)P(2X)

So three solutions of f(2x) is [spoiler]2, 4, and 11/2 [/spoiler]

Ans option A
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