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

Question

1. -2w²+201.02=66.54

 

2. 3y²+51=918

Answer 1

Sorry.  I have to answer this to correct my own comment. ;)

 

-2w²+201.02=66.54

-2w²=-201.02+66.54

-2w²=-134.48

w²=67.24

w=±8.2

Answer 2

-2w^2 = 66.54 - 201.02

 

-2w^2 = - 134.38

 

2w^2 = 134.38

 

w^2 = 67.19

 

w= 8.196