Question

25x^2-4/(дробь)15x-6 -1-9x^2/(дробь)5+15x

Answer 1

$\frac{(5x - 2)(5x+2)}{3(5x-2)} - \frac{(1-3x)(1+3x)}{5(1+3x)} = \frac{5x+2}{3} - \frac{1-3x}5}$