Question

Please help I have no idea how to do this!
1)Solve 5x2 = -30x - 65.
2) Solve -2x2 +3x - 9 = 0.
3)Solve x2 + 4x + 8 = 0.
4)Solve -2x2 - 16x - 44 = 0.
5)Solve x2 - 7x = -13.

Answer 1

Do you mean x^2 instead of x2?

Answer 2

yep she does

Answer 3

yes sorry

Answer 4

in the 1st question, divide every term by 5 and rewrite it as

\[x^2 + 6x + 13 = 0\]

now use the general quadratic formula to solve it.

Answer 5

would it be x= -3 +/- 4i?

Answer 6

sorry 2i?

Answer 7

@campbell_st

Answer 8

no I think the 2nd choice is correct

\[x = -3 \pm 2i\]