Question

(x+5)(x+1)+(x+5)(x+8)

Answer 1

2x² + 19x + 45

Explanation:

(x + 5)(x + 1) + (x + 5)(x + 8) ← expand both sets of factors using FOIL

= x² + 6x + 5 + x² + 13x + 40 ← collect like terms

= 2x² + 19x + 45