Question

Решите уравнение 49-4х^2=0

Answer 1

4х^2=49
x^2=49/4
x1=-7/2
x2=+7/2

Answer 2

49-4х^2=0
-4x^2=0-49
-4x^2=-49
x^2=-49/(-4)
x^2=√12.25
x1=+3.5
x2=-3.5
Ответ:x1=+3.5,x2=-3.5