x2 + x2 = 2x2. Don't be thrown by squares (or other powers).
y + y = 2y. Just treat x2 like you treat y. But remember, you can only add together the same powers of x, you cannot add together x and x2 (or other powers of x).
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(x-3)(x-2)
(x - 3)(x + 5)
Solve using the quadratic formula
32 + x = 259 + x = 25x = 25 - 9x = 16
It can be solved by using the quadratic equation formula.