Ответ:
Объяснение:
5 - (2 + х)(2 - х) = 5 - (4-2x+2x-x^2) = 5 - 4 + 2x - 2x + x^2 = x^2 + 1 = (-3)^2 + 1 = 9 + 1 = 10
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Ответ:
Объяснение:
5 - (2 + х)(2 - х) = 5 - (4-2x+2x-x^2) = 5 - 4 + 2x - 2x + x^2 = x^2 + 1 = (-3)^2 + 1 = 9 + 1 = 10