Question

phân tích đa thức 6x^2+15x-36 thành nhân tử

Answer 1

   6x^2 + 15x - 36

= 6x^2 + 24x - 9x - 36

= (6x^2 + 24x) - (9x + 36)

= 6x(x + 4) - 9(x+4)

= (6x - 9) (X + 4)

= 3(2x - 3)(x + 4)

Answer 2

\(6x^2+15-36\)

\(=3\left(2x^2+5x-12\right)\)

\(=3\left(2x^2+8x-3x-12\right)\)

\(=3\left[2x\left(x+4\right)-3\left(x+4\right)\right]\)

\(=3\left(2x-3\right)\left(x+4\right)\)