1.x2 + 7x + 6
= x2 + x + 6x + 6
= (x2 + x) + (6x + 6)
= x(x + 1) + 6(x + 1)
= (x + 1)(x + 6).
\(2.x^4+2008x^2+2007x+2008\)
\(=\left(x^4+x^2+1\right)\left(2007x^2+2007x+2007\right)\)
\(=\left(x^2+x+1\right)\left(x^2-x+1\right)+2007\left(x^2+x+1\right)\)
\(=\left(x^2+x+1\right)\left(x^2-x+2008\right)\)


