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.