Question

(x+9)(x+10) expand and simplify

Answer 1

x² + 19x + 90

Explanation:

(x + 9)(x + 10)

each term in the second factor is multiplied by each term in the first factor, that is

x(x + 10) + 9(x + 10) ← distribute parenthesis

= x² + 10x + 9x + 90 ← collect like terms

= x² + 19x + 90