Question

Сократить 5 дробей по алгебре!

Answer 1

Привет!

$\frac{8a {b}^{2} }{4a} = 2 {b}^{2}$

$\frac{ {a}^{2} - 4}{a + 2} = \frac{(a + 2)(a - 2)}{a + 2} = a - 2$

$\frac{ {a}^{2} - 2ab + {b}^{2} }{ {(a - b)}^{3} } = \frac{( {a - b)}^{2} }{ {(a - b)}^{3} } = \frac{1}{a - b}$

$\frac{2a - 6 {a}^{2} }{2ab} = \frac{2a(1 - 3a)}{2ab} = \frac{1 - 3a}{b}$

Answer 2

Ответ:

1)8аb^2/4a = 8b^2/4 = 2b^2

2)a^2-4/a+2 = (a-2)×(a+2) / a+2 = a-2

3) a^2-2ab+b^2 / (a-b)^3 = (a-b)^2 / (a-b)^3 = 1 / a-b

4)2a-6a^2 / 2ab = 2a×(1-3a) / 2ab = 1-3a / b