Question

Решите неравенство
$sqrt{6x+7} textgreater x+2$

Answer 1

6x+7≥0⇒6x≥-7⇒x≥-7/6
6x+7>x²+4x+4
x²-2x-3<0
x1+x2=2 U x1*x2=-3
x1=-1 U x2=3
x∈(-1;3)