Question

Помогите срочно пж плавильн

Answer 1

$1) \frac{a^{2}b}{12c}*\frac{16c}{ab^{2}}=\frac{16a^{2}bc}{12ab^{2}c}=\frac{4a^{2}bc}{3ab^{2}c}=\frac{4a}{3b}$;

$2)\frac{28a}{c^{3}}:(4a^{2}c)=\frac{28a}{4a^{2}c^{4}} =\frac{7}{ac^{4}}$;

$3) \frac{6a-6b}{c^{2}}*\frac{4c^{6}}{(a+b)(a-b)}=\frac{24ac^{6}-24bc^{6}}{c^{2} (a+b)(a-b)}=\frac{24c^{6}(a-b)}{c^{2} (a+b)(a-b)} =\frac{24c^{4}}{a+b}$;

$4) \frac{5x-10}{2x+3}:\frac{x^{2}-4}{4x+6}=\frac{5(x-2)*2(2x+3)}{(2x+3)*(x-2)(x+2)}=\frac{5*2}{x+2}=\frac{10}{x+2}$