1 )
=x3-2x2+6x2-12x+5x-10
=x2(x-2)+6x(x-2)+5(x-2)
=(x-2)(x2+6x+5)
=(x-2)(x2+x+5x+5)
=(x-2)[x(x+1)+5(x+1)]
=(x-2)(x+1)(x+5)
toàn mũ lớn hơn 3 khó làm quá!!!! >.<
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1 ) \(x^3+4x^2-7x-10\)
\(x^3+4x^2-7x-10\)
\(=\left(x+5\right)\left(x-2\right)\left(x+1\right)\)
a) x3 + 4x2 - 7x - 10
= (x + 5) (x - 2) (x + 1)
từ từ mk sẽ làm tiếp nha!!
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2)
= x5-x3-4x3+4x
=x3(x2-1)-4x(x2-1)
=(x2-1)(x3-4x)
=(x+1)(x-1)x(x+2)(x-2)
