Use square roots to solve the following equations round to the nearest hundredth if necessary

Question

3y²+51=918

Answer 1

3y² + 51 = 918

 

Subtract 51 from both sides:

 

3y² = 918 - 51 = 867

 

Divide both sides by 3:

 

y² = 867/3 = 289

 

Take the square root of both sides:

 

√y² = √289

 

y = ±17