Question

Please help!!!!
factorize:
1) x² + 9x + 18
2) x² + 12x + 20
3) x² + 14x + 45

Answer 1

1.) hmm something that multiplies to 18 and adds up to 9..6 &3! so= (x+6)(x+3)
2.)(x+2)(x+10)
3.)(x+9)(x+5)