(2x-3)(2x+3)-(x+2)2 - 4x(x-1)=4x² - 9 - 2x - 4 - 4x² + 4x=2x - 13, если х=-2, то
2*(-2) - 13=-17
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(2x-3)(2x+3)-(x+2)2 - 4x(x-1)=4x² - 9 - 2x - 4 - 4x² + 4x=2x - 13, если х=-2, то
2*(-2) - 13=-17