1+6x-7x² এর উৎপাদক -

A (1-x)(1-7x)

B (1-x)(1+7x)

C (1+x)(1-7x)

D (1+x)(1+7x)

Solution

Correct Answer: Option B

1+6x-7x²
=1+7x-x-7x²
=1(1+7x)-x(1+7x)
=(1+7x)(1-x)

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