Find three consecutive positive integers such that the square of the first, increased by the last, is 22.

Question

Use RESA (Representation, Equation, Solution, Answer) to solve the problem.

Answer 1

x^2 + x+2 = 22

x^2 +x -20 = 0

(x+5)(x-4) = 0

x =-5 or 4

3 consecutive positive integers are: 4,5 and 6