Question

Solve –3x2 + 30x – 90 = 0

Answer 1

Factor out -3 first.

Answer 2

x = -30+ 30i / -6 = 5 - 30i
and x= 5+30i

Answer 3

\[-3(x^2-10x+30)=0\]

Answer 4

the roots will be complex...it can't be factorized..

Answer 5

\[x=\frac{10\pm \sqrt{100-4(30)}}{2}=\frac{10\pm \sqrt{100-120}}{2}\]

Answer 6

\[x=\frac{10\pm \sqrt{-20}}{2}=\frac{10\pm 2\sqrt{5}i}{2}=5\pm \sqrt{5}i\]

Answer 7

You forgot to divide the 10 by 2 lilmagda105

Answer 8

no i gave you the options of answers

Answer 9

There is only one answer on that post and it is incorrect.

Answer 10

The answers I gave you are correct.

Answer 11

is that the answer