math,algebra,help

Is this right:

Solve:
x^2+16x+60=0

this is what i did:

i used the quadratic formula and this is what i ended up with.

x = -8 +- (sqrt(16))/(2)

Which is -8 +-2

Or you could have factored the quadratic
(x+10)(x+6)

Which is -8 +-2

Or you could have factored the quadratic
(x+10)(x+6)

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