Question

Solve 5x2 = -30x - 65.

Answer 1

Help!!!

Answer 2

This isn't too hard, just isolate x to one side.

Answer 3

\[ 5x^2 = -30x - 65\] start with
\[5x^2+30x+65=0\] then maybe factor

Answer 4

Satellite explained it. And wo, I've never seen a 100 as a SmartScore.

Answer 5

even easier if you divide by \(5\) and start with
\[x^2+6x+13=0\] which i now see does not factor, hmm guess you need the quadratic formula

Answer 6

and in fact there are no real solutions, only two complex ones

Answer 7

x = -3 ± 2i

x = -3 ± 4i

x = -6 ± 2i

x = -6 ± 4i

Answer 8

yes, it is one of those
definitely complex

Answer 9

is it
a or c\

Answer 10

easiest to solve in this case by completing the square, because the middle term is \(6x\)
you have \[x^2+6x+13=0\\
x^2+6x=-13\\
(x+3)^2=-13+3^2\\
(x+3)^2=-4\\
x+3=\pm\sqrt{-4}\\
x+3=\pm2i\\x=-3\pm2i\]

Answer 11

Solve -2x2 +3x - 9 = 0.