Question

Is my answer correct? :)


Question: Solve -2x2 - 16x - 44 = 0
Answer: Below

Answer 1

\[-2x^2 - 16x - 44 = 0 \]
close

Answer 2

there is no 2 in front of the \(\sqrt{6}\)

Answer 3

Let me check :)

Answer 4

not sure if you used the quadratic formula or completed the square but you are off by that two

Answer 5

this one is easiest to solve completing the square

Answer 6

My answer:

Answer 7

yes

Answer 8

Thank you kind sir :) Do you mind checking my other one? I did the work

Answer 9

sure go ahead and post

Answer 10

Solve: 5x^2 = -30x -65

A.) x = -3+ 2i
B.) x = -3 +4i
C.) x = -6 +2i
D.) x = -6+4i

My answer is B

Answer 11

especially if you call me "kind sir"

Answer 12

again you are off by a 2, i sense a trend

Answer 13

should be \[-3\pm2i\] i am wondering what computation you are doing to get the second part off by a factor of 2

Answer 14

Why do I do that? ugh

Answer 15

Let me check once again

Answer 16

perhaps it is in taking the square root
are you using the quadratic formula? or completing the square?

Answer 17

A.....

Answer 18

The former

Answer 19

\[5x^2 = -30x -65\]
\[5x^2+30x=-65\] divide by 5\[x^2+6x=-13\]
\[(x+3)^2=-13+9=-4\]
\[x+3=\pm\sqrt{-4}=\pm2i\]
\[x=-3\pm2i\]

Answer 20

This is making sense now, I was doing the steps wrong in the second half... i appreciate your efforts, love :)

Answer 21

even if you are using the formula, make sure to divide out any common factor first
you should start in that case with
\[5x^2+30x+65=0\] then divide by 5 and get
\[x^2+6x+13=0\] don''t keep the common factor, it is too much arithmetic

Answer 22

I can see where I went off completely...it seems so obvious now!

Answer 23

good ;)

Answer 24

WOW :) thank YOU ;)

Answer 25

yw