Разложи ** множители x3+7x2−7x−49 .

Question

Разложи на множители x3+7x2−7x−49 .

Answer 1

(x3+7x2)-(7x+49)=x2(x+7)-7(x+7)=(x2-7)(x+7)

Comments

СПАСИБО!!!!!!!!!!!!!!!!!!!!!!!

Answer 2

X³ + 7x² - 7x - 49 = (x³ + 7x²) - (7x + 49) = x²(x + 7) - 7(x + 7) =
= (x + 7)(x² - 7) = (x + 7)[x² - (√7)²] = (x + 7)(x - √7)(x + √7)