Question

Сократите дробь
5а^2+19a-4
__________
1-25a^2

Answer 1

$frac{(5a^2+19a-4)}{(1-25a^2)} = frac{(5a-1)(a+4)}{(1-5a)(1+5a)} = frac{-(a+4)}{1+5a}$