Question

x mũ 3+5x mũ2 trừ 6x giai gium nha

Answer 1

\(x^3+5x^2-6x\)

\(=x^3+6x^2-x^2-6x\)

\(=x^2.\left(x+6\right)-x.\left(x+6\right)\)

\(=\left(x^2-x\right).\left(x+6\right)\)

Answer 2

\(x^3+5x^2-6x\)

\(=x\left(x^2+5x-6\right)\)

\(=x\left(x^2+6x-x-6\right)\)

\(=x\left[x\left(x+6\right)-\left(x+6\right)\right]\)

\(=x\left(x+6\right)\left(x-1\right)\)

Answer 3

\(x^3+5x^2-6x\)

\(=x^3+6x^2-x^2-6x\)

\(=\left(x^3+6x^2\right)-\left(x^2+6x\right)\)

\(=x^2\left(x+6\right)-x\left(x+6\right)\)

\(=\left(x+6\right)\left(x^2-x\right)\)