SOLUTION: y^2+4y=45

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Question 130866: y^2+4y=45
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

y%5E2%2B4y=45 Start with the given equation


y%5E2%2B4y-45=0 Subtract 45 from both sides.



%28y%2B9%29%28y-5%29=0 Factor the left side (note: if you need help with factoring, check out this solver)



Now set each factor equal to zero:
y%2B9=0 or y-5=0

y=-9 or y=5 Now solve for y in each case


So our answer is
y=-9 or y=5