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