Найдите значение выражений
1) (2x-18)(2x+18) - 4x^2 - 7x + 48 при x=110
2) (5x-9)(5x+9) - 25x^2 - 4x - 19 при x=100
1) (2x-18)(2x+18) - 4x^2 - 7x + 48 при x=110
2) (5x-9)(5x+9) - 25x^2 - 4x - 19 при x=100
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2) 25х² - 81 - 25х² - 4х - 19 = -4х - 100 = -4×100 - 100 = -500