SOLUTION: g squared minus 4g minus 45 = 0

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Question 129911: g squared minus 4g minus 45 = 0
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

g%5E2-4g-45=0 Start with the given equation

%28g-9%29%28g%2B5%29=0 Factor the left side (note: if you need help with factoring, check out this solver)



Now set each factor equal to zero:
g-9=0 or g%2B5=0

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


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


Notice if we graph y=x%5E2-4x-45 (just replace g with x) we can see that the roots are x=9 and x=-5 . So this visually verifies our answer.


+graph%28500%2C500%2C-10%2C10%2C-10%2C10%2C0%2C+x%5E2-4x-45%29+