Question

Сократить 15x^10y^2/24x^5y^6. 16x/x^2-4x. 2a-4/a^2-4. A^2+6a+9/a^2-9

Answer 1

$frac{15x^{10}y^2}{24x^5y^6}= frac{5x^5}{8y^4} \ frac{16x}{x^2-4x}= frac{16x}{x(x-4)}= frac{16}{x-4} \ frac{2a-4}{a^2-4}= frac{2(a-2)}{(a-2)(a+2)}= frac{2}{a+2} \ frac{a^2+6a+9}{a^2-9}= frac{(a+3)^2}{(a-3)(a+3)}= frac{a+3}{a-3}$