What are the solution(s) to the quadratic equation 40 − x2 = 0?




Miriam reduced a square photo by cutting 3 inches away from the length and the width so it will fit in her photo album. The area of the reduced photo is 64 square inches. In the equation (x – 3)2 = 64, x represents the side measure of the original photo.


What is the first step in solving the quadratic equation x2 – 40 = 0?
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