Помогите решить примеры, пожалуйста.
a^3-8
m(n-3)+2(n-3)
(3-2x)^3
2(5-y^2)(y^2+5)+(y^2-3)^2-(4-y^2)(y^2+y-1)
a^3-8
m(n-3)+2(n-3)
(3-2x)^3
2(5-y^2)(y^2+5)+(y^2-3)^2-(4-y^2)(y^2+y-1)
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Answers & Comments
1) a³ - 8 = (a - 2)*(a² + 2a + 4)
2) m(n - 3) + 2(n - 3) = (n - 3)*(m + 2)
3) (3 - 2x)³ = 27 - 54x + 36x² - 8x³
4) 2(5 - y²)*(y² + 5) + (y² - 3)² - (4 - y²)*(y² + y - 1) =
= 50 - 2y⁴ + y⁴ - 6y² + 9 - 4y² - 4y + 4 + y⁴ + y³ - y² =
= 63 + y³ - 11y² - 4y = y³ - 11y² - 4y + 63