Question

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

Answer 1

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 +
`√(25+56)`/2
x=5 +
`√(81)`/2
x=5 +
`√(81)`/2.....x=7
or
x=5 -
`√(81)`/2....x=-2