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

1. -2w2+201.02=66.54
 
2. 3y2+51=918
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2 Answers

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
-2w^2 = 66.54 - 201.02
 
-2w^2 = - 134.38
 
2w^2 = 134.38
 
w^2 = 67.19
 
w= 8.196