Question

phân tích đa thức thành nhân tử :-8x²+5x+3

Answer 1

-8x² + 5x + 3

<=> -8x² + 8x - 3x + 3

<=> 8x(x - 1) - 3(x - 1)

<=> (8x - 3)(x - 1)

Answer 2

-8x²+5x+3

=−1(8𝑥²−5𝑥−3)

=−1(8𝑥²+3𝑥−8𝑥−3)

=−1(𝑥(8𝑥+3)−1(8𝑥+3))=−1(𝑥−1)(8𝑥+3)

Answer 3

\(=-8x^2+8x-3x+3\\ =-8x\left(x-1\right)-3\left(x-1\right)\\ =\left(-8x-3\right)\left(x-1\right)\)

Answer 4

\(-8x^2+5x+3\)

\(=-8x^2+8x-3x+3\)

\(=-8x\left(x-1\right)-3\left(x-1\right)\)

\(=\left(x-1\right)\left(-8x-3\right)\)