Question

Решите уровнения срочно - 5x2 =0 1,7x2=0. 2x2-8=0. 4x2=-16 3x2+5x=0. X2=7x

Answer 1

Ответ:

Объяснение:

$-5x^2=0\x^2=frac{0}{-5} \x^2=0\x_1=x_2=0$

$1.7x^2=0\x^2=0:1.7\x^2=0\x_1=x_2=0$

$2x^2-8=0\2x^2=8\x^2=8:2\x^2=4\x_1=2\x_2=-2$

$4x^2=-16\x^2=-4$

Ответ:x∉R

$3x^2+5x=0\x(3x+5)=0\x_1=0\3x_2+5=0\3x_2=-5\x_2=-5:3\x_2=-1frac{2}{3}$

$x^2=7x\x^2-7x=0\x(x-7)=0\x_1=0\x_2-7=0\x_2=7$