Question

tính :

. (2x-3) (x²+2x-4)

x.(y-x)-y(x-y)

(2x³-7x²+13x+2) : (2x-1)

Answer 1

b>x.(y-x)+y.(y-x) xong nhoms hai cais vaof nhau laf duocj

Answer 2

de ma

Answer 3

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

\(=2x^3+4x^2-8x-3x^2-6x+12\)

\(=2x^3+x^2-14x+12\)

Answer 4

a)\(\left(2x-3\right)\left(x^2+2x-4\right)\)

\(=2x^3+4x^2-8x-3x^2-6x+12\)

\(=2x^3+x^2-14x+12\)

b) \(x\left(y-x\right)-y\left(x-y\right)\)

\(=x\left(y-x\right)+y\left(y-x\right)\)

\(=\left(y-x\right)\left(x+y\right)\)