Question

What is the product of (x+1) (x+4)

Answer 1

x(x+1) 1(x+4)
x^2+x+x+4
x^2+2x+4

Answer 2

x² + 5x + 4

Explanation:

(x + 1) (x + 4)

apply the FOIL method

xx + (x * 4) + (1 * x) + (1 * 4)

xx + 4x + (1 * x) + (1 * 4)

xx + 4x + 1x + 4

x² + 5x + 4