2х2-14=0

Question

2х2-14=0

Answer 1

2X^2-14=0

2X^2=14

X^2=7

X=±SQRT(7)

 

Answer 2

2x^2-14=0

2x^2=14

x^2=14/2

x1=-sqrt7

x2=sqrt7

S={+-sqrt7}