Question

Answer 1

Bài 2: 

a: \(=5xy^2\left(4xy-1\right)\)

b: \(=y\left(x-2\right)-\left(x-2\right)\left(x+2\right)=\left(x-2\right)\left(y-x-2\right)\)

c: \(=7\left(x+y\right)-\left(x+y\right)^2=\left(x+y\right)\left(7-x-y\right)\)

d: \(=\left(x^2+7x+12\right)\left(x^2+7x+10\right)-24\)

\(=\left(x^2+7x\right)^2+22\left(x^2+7x\right)+96\)

\(=\left(x^2+7x+6\right)\left(x^2+7x+16\right)\)

\(=\left(x+1\right)\left(x+6\right)\left(x^2+7x+16\right)\)