TS ICET 24 May 2018 Shift 1 Paper

Question : 125 of 200

Marks: +1, -0

The value of a so that

\x^4 -2\x^3 +3\x -\ax+5

i s exactly divisible by (x-1) is

Solution:

Let

f(x)=x^{4}-2 x^{3}+3 x^{2}-a x+5

f(1)=0

⇒ 1-2+3-a+5=0

⇒ a=7

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