Question

Срочно даю 25 зат1 15 на 2, 10 5 ♥️

Answer 1

1) a^4 - b^8 = (a^2 + b^4)(a^2 - b^4) =

= (a^2 + b^4)(a + b^2)(a - b^2)

2) 20x^3 * y^2 + 4x^2 * y = x^2 * y(20xy + 1)

3) 27b^3 + a^6 = (3b)^3 + (a^2)^3 =

= (3b + a^2)(9b^2 - 3b * a^2 + a^4)

4) 2bx - 3ay - 6by + ax = 3y(a + 2b) + x(a + 2b) =

= (3y + x)(a + 2b)

5) b(a + 5) - c(a + 5) = (b - c)(a + 5)

6) x^2 + 6x + 9 = (x + 3)^2

7) a^2 + ab - 5a - 5b = a(a + b) - 5(a + b) = (a - 5)(a + b)

8) 15a^3 * b + 3a^2 * b^3 = 3a^2 * b(5a + b^2)

1) x^3 - 4x = 0

x(x^2 - 4) = 0

x(x - 2)(x + 2) = 0

Ответ: x = -2; x = 0; x = 2

2) x^3 - 10x^2 + 25x = 0

x(x^2 - 10x + 25) = 0

x(x - 5)^2 = 0

Ответ: x = 0; x = 5