camcook8 camcook8

30-03-2014
Mathematics

Answered

What's m2-5m-14=0 solved using the quadratic formula?

Verified Answer :

amdolce7 amdolce7

30-03-2014

the answers are x=7 or x=-2

\(x=-b\)+\(\sqrt{b ^{2} -4ac}\)/2
x=5 + \(\sqrt{(-5) ^){2}-4(1)(-14 }\)/2
x=5 +\(\sqrt{25+56}\)/2
x=5 +\(\sqrt{81}\)/2
x=5 +\(\sqrt{81}\)/2.....x=7
or
x=5 - \(\sqrt{81}\)/2....x=-2

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