Ответ №1
2a^2 + 8ab + 8b^2 = 2(a^2 + 4ab + 4b^2) = 2(a + 2b)^2 = 2(a + 2b)(a+2b)
a + a^2 - b - b^2 = (a^2 - b^2) + (a - b) = (a - b)(a+b) + (a - b) =
= ( a - b)(a + b + 1)
Ответ №1
2a^2 + 8ab + 8b^2 = 2(a^2 + 4ab + 4b^2) = 2(a + 2b)^2 = 2(a + 2b)(a+2b)
a + a^2 - b - b^2 = (a^2 - b^2) + (a - b) = (a - b)(a+b) + (a - b) =
= ( a - b)(a + b + 1)
Знаете ответ?