Автор - KristinaPimenova

Помогите, пожалуйста

Ответ

Автор - nKrynka
a)  ab + ac + 4b + 4c = a(b + c) + 4(b + c) = (b + c)(a + 4)
b)  (6x - 7) + 3x(6x - 7) = (6x - 7)(1 + 3x)
c)  x³ + x²z - 2xz² - 2z³ = x²(x + z) - 2z²(x + z) = (x + z)(x² - 2z²)

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