Question

Преобразуйте выражение в многочлен: 2)(3a-b)2; 4)(5x-2y)2; 6)(x+c)2; 8)(0,2a+b)2

Answer 1

$2)(3a - b) {}^{2} = 9a {}^{2} - 6ab + b {}^{2} \\ 4)(5x - 2y) {}^{2} = 25x {}^{2} - 20xy + 4y {}^{2} \\ 6)(x + c) {}^{2} = x {}^{2} + 2xc + c {}^{2} \\ 8)(0.2a + b) {}^{2} = 0.04a {}^{2} + 0.4ab + b {}^{2}$