i need help in solving a algebra 2 radical equation

Question

√(m/7) +4 =9

Answer 1

You want to isolate the root, and then square both sides of the equation.

 

√m/7  +4 = 9

√m/7 = 5

m/7 = 25

m = 175

 

Check by plugging it back into the original equation.

 

 

Answer 2

√(m/7)+4=9

√(m/7)=9-4

√(m/7)=5

square both sides

m/7=25

m=7*25

m=175