How do you solve #sqrt(5x^2 - 40)= 0#?
2 Answers
Mar 12, 2018
Explanation:
Square both sides:
#5x^2 - 40 = 0#
#5x^2 = 40#
#x^2 = 8#
#x = +- sqrt(8)#
#x = +-2sqrt(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
#5x^2-40=0# - Add
#40# to both sides:#5x^2=40# - Divide by
#5# on both sides:#x^2=8# - Square root on both sides:
#x= +- sqrt(8)#