SOLUTION: ^m^2-7m-20Please help

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Question 496843: ^m^2-7m-20Please help
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

m%5E2-7m-20=0...solve for m using quadratic formula
m+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ...note that a=1, b=-7, and c=-20


m+=+%28-%28-7%29+%2B-+sqrt%28+%28-7%29%5E2-4%2A1%2A%28-20%29+%29%29%2F%282%2A1%29+


m+=+%287+%2B-+sqrt%2849%2B80+%29%29%2F2+

m+=+%287+%2B-+sqrt%28129%29%29%2F2+

m+=+%287+%2B-+11.36%29%2F2+
solutions:
m+=+%287+%2B+11.36%29%2F2+
m+=+%2818.36%29%2F2+
highlight%28m+=+9.18%29
or
m+=+%287+-+11.36%29%2F2+
m+=+%28-4.36%29%2F2+
highlight%28m+=+-2.18%29