Question

x2/4-25=0 помогите решить

Answer 1

$\frac{x^{2} }{4}-25=0\\\\x^{2}-100=0\\\\x^{2}=100\\\\x_{1}=10\\\\x_{2}=-10$

Answer 2

x2/4-25=0

x2=25-4

x2=21

x=корень21