Question

Answer 1

a: \(-5x^2+3x\left(x+2\right)\)

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

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

b: \(4x\left(x-1\right)-4x^2\)

\(=4x^2-4x-4x^2\)

=-4x

c: \(2x^2\left(-x^2-3x\right)+6x^3\)

\(=-2x^4-6x^3+6x^3\)

\(=-2x^4\)

d: \(2x^2\left(x-1\right)-5\left(x+2\right)-2x\left(x-2\right)\)

\(=2x^3-2x^2-5x-10-2x^2+4x\)

\(=2x^3-4x^2-x-10\)

Answer 2

Đề yêu cầu gì em nhỉ?