Question

9m²-124=38

14a²+37=135

8a²+2=34

tengo que hacer la operación ​

Answer 1

Respuesta:

9m²-124=38

9m^2-124+124=38+124

9m^2=162

$\frac{9m^2}{9}=\frac{162}{9}$

m^2=18

$m=\sqrt{18},\:m=-\sqrt{18}$

$m=3\sqrt{2},\:m=-3\sqrt{2}$

14a^2+37=135

14a^2+37-37=135-37

14a^2=98

$\frac{14a^2}{14}=\frac{98}{14}$

a^2=7

$a=\sqrt{7},\:a=-\sqrt{7}$

8a²+2=34

$8a^2+2=34$

$8a^2+2-2=34-2$

$8a^2=32$

$\frac{8a^2}{8}=\frac{32}{8}$

$a^2=4$

$a=\sqrt{4},\:a=-\sqrt{4}$

$a=2,\:a=-2$

^2=$x^{2}$