Question

Помогите пожалуйста дам 35 баллов

Answer 1

2a)

a(a + 3) - 2(a + 3) = (a + 3)(a - 2)

2б)

ax - ay + 5x - 5y = (ax - ay) + (5x - 5y) = a(x - y) + 5(x - y) = (x - y)(a + 5)

3)

- 0,1x(2x² + 6)(5 - 4x²) = - 0,1x(10x² - 8x⁴ + 30 - 24x²) =0,1x(- 8x⁴ - 14x² +30)=

= - 0,8x⁵ - 1,4x³ + 3

4a)

x² - xy - 4x + 4y = (x² - xy) - (4x - 4y) = x(x - y) - 4(x - y) = (x - y)(x - 4)

4б)

ab - ac - bx + cx + c - b = (ab - ac) - (bx - cx) + (c - b) =

=  a(b - c) - x(b - c) - (b - c) = (b - c)(a - x - b)