Question

(\(x^2\) + x+ 1)(\(x^2\) + x +2) -6

Answer 1

Ta có: \(\left(x^2+x+1\right)\left(x^2+x+2\right)-6\)

\(=\left(x^2+x\right)^2+3\left(x^2+x\right)+2-6\)

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

\(=\left(x^2+x+4\right)\left(x^2+x-1\right)\)