<span>9(4x - 3y)</span>² <span>-16(3x - 2y)</span>² = (3(4х - 3у))² - (4(3х - 2у))² = (3(4х - 3у) - 4(3х - 2у))<span>(3(4х - 3у) + 4(3х - 2у)) = (12х - 9у - 12х + 8у)(12х - 9у + 12х - 8у) = -у(24х - 17у) = -24ху + 17у</span>² = 17у² - 24ху
3x^17*y^14*64*x^3*y^9=192*x^20*y^23
Ответ: 192*x^20*y^23