Q.

One root of the following given equation2x5-14x4+31x3-64x2+19x+130=0 is

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a

1

b

3

c

5

d

7

answer is C.

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Detailed Solution

Putting x=52(5)5-14(5)4+31(5)3-64(5)2+19(5)+130=0Hence x=5 satisfies the given equation.Thus 5 is a root of the equation.
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