Question

thực hiện cascphesp tính

Answer 1

g: \(\left(x-2\right)\left(x^2-5x+1\right)-x\left(x^2+11\right)\)

\(=x^3-5x^2+x-2x^2+10x-2-x^3-11x\)

\(=-7x^2-2\)

h: \(\left[\left(x^2-2xy+2y^2\right)\left(x+2y\right)-\left(x^2+4y^2\right)\left(x-y\right)\right]\cdot2xy\)

\(=\left(x^3+8y^3-x^3+x^2y-4xy^2+4y^3\right)\cdot2xy\)

\(=\left(12y^3+x^2y-4xy^2\right)\cdot2xy\)

\(=24xy^4+2x^3y^2-8x^2y^3\)