Question

1. Скоротити дроб x²-49 ___ 2x+14​

Answer 1

$\displaystyle\bf\\\frac{x^{2} -49}{2x+14} =\frac{x^{2} -7^{2} }{2\cdot(x+7)} =\frac{(x+7)(x-7)}{2(x+7)} =\frac{x-7}{2}$