Question

Пожалуйста решите !!!Срочно!!!
$10 x^{2} +12 x^{2} -45=-2 x^{2}$

Answer 1

10x²+12x²-45=-2x²
10x²+12x²+2x² = 45
24x² = 45
x²=45/24 = 15/8
$x =\pm \sqrt{ \frac{15}{8} }$

Answer 2

$24x^2=45\\x^2=1.875\\x_1= \sqrt{1.875}\\x_2=-\sqrt{1.875}$