Question

12. If x + a is a factor of x^4 - a^2x^2 + 3x - 6a, then value of a is .....

1

-1

2

0

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Answer 1

Answer:

if x+a is a factor of above plynomial then for x = -a

it will be zero ,,, (factor theorem)

that is a^4 - a^2a^2 + 3(-a) -6a = 0

a^4 - a^4 - 3a -6a = 0

- 9a = 0

a = 0

so option 4th is correct

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