Question

v^2+13v+42=0

Answer 1

v = -7 or v = -6

Answer 2

7*6=42
7+6=13
so
v^2+13v+42=0
(v+6)(v+7)=0
v+6=0 or v+7=0
v=-6 or v=-7
{-7, -6}

Answer 3

@seanwalsh

your ans is wrong !!!! solution is { -6 and -7}

Answer 4

Right. Sorry about that. Long hours on vector calc have got my brain fried.

Answer 5

don't worry, it happens to all of us every now and then.....☺