How do you solve √5x2−40=0?
2 Answers
Mar 12, 2018
Explanation:
Square both sides:
5x2−40=0
5x2=40
x2=8
x=±√8
x=±2√2
Both these solutions are valid as they satisfy the original equation.
Hopefully this helps!
Mar 12, 2018
Explanation:
- First, square both sides of the equation, so
5x2−40=0 - Add
40 to both sides:5x2=40 - Divide by
5 on both sides:x2=8 - Square root on both sides:
x=±√8