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You can put this solution on YOUR website! w(w - 2) + 2(2 - w)
= w(w - 2) + 2(-w + 2) {switched around 2nd binomial}
= w(w - 2) - 2(w - 2) {factored -1 out of 2nd binomial}
= (w - 2)(w - 2) {factored (w - 2) out of the two binomials}