[tex](x + 4)(x - 4) - (x + 12) {}^{2} = {x}^{2} - 16 - ( {x}^{2} + 24x + 144) = {x}^{2} - 16 - x {}^{2} - 24x - 144 = - 24x - 160 = - 24 \times ( - 2.5) - 160 = 60 - 160 = - 100[/tex]
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[tex](x + 4)(x - 4) - (x + 12) {}^{2} = {x}^{2} - 16 - ( {x}^{2} + 24x + 144) = {x}^{2} - 16 - x {}^{2} - 24x - 144 = - 24x - 160 = - 24 \times ( - 2.5) - 160 = 60 - 160 = - 100[/tex]