The product of two consecutive integers is 90. Which equation can be used to find the two integers?

x^2 + x = 90

2x + 1 = 90

2x + x = 90

x^2 = 90

Two consecutive integers would be x and x + 1

if you multiply them you have x (x + 1) = x^2 + x

if you want the product to equal 90 you get x^2 + x = 90

The first option is correct.