SOLUTION: I am having trouble with this expression... {{{3*n^2-5n+17=30}}} I am in the 7th grade

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Question 50442: I am having trouble with this expression...
3%2An%5E2-5n%2B17=30
I am in the 7th grade
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
I am having trouble with this expression...
3*n^2-5n+17=30
3N^2-5N+17-30=0
3N^2-5N-13=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x+=+%285+%2B-+sqrt%28+5%5E2-4%2A3%2A%28-13%29+%29%29%2F%282%2A3%29+
x+=+%285+%2B-+sqrt%28+25%2B156+%29%29%2F%286%29+
x+=+%285+%2B-+sqrt%28+181+%29%29%2F%286%29+
X=3.076.....OR........-1.4089