Correct Answer: Option C
ব্যাখ্যাঃ x – 7x – 6
=x3+x2-x2-x-6x-6
= x2(x+1)-x(x+1)–6(x+1) =(x+1)(x-x-6)
= (x+1)(x2-x-6)
=(x+1)(x2-3x+2x-6)
=(x+1)(x-3x+2x-6)
=(x+1){x(x-3)+2(x-3)}
=(x+1){(x-3)(x+2)} -
=(x+1)(x+2)(x-3)
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