Question

check answer please
5x^2-5x+1 solve using the quadratic formula

Answer 1

What answer did you get?

Answer 2

\[x=-5\pm \frac{ \sqrt{-5^{2}-4(5)(1)} }{ 2(5) }\]

Answer 3

\[x=-5\pm \frac{ \sqrt{45} }{ 10 }\]

Answer 4

but in my answer choices i dont have this do i simplify the 45?

Answer 5

The negative sign is incorrect.

Answer 6

i know typo

Answer 7

\[\sqrt{45}=\sqrt{9}\times \sqrt{5}\]

Answer 8

so my answer would be \[x=\frac{ 5\pm \sqrt{5} }{ 10 }\]

Answer 9

What happened to the 3 in front of the radical?

Answer 10

what?

Answer 11

\[\sqrt{9}=3\]

Answer 12

ok im conffused

Answer 13

After you square root 9, 3 vanishes like a ghost for no reason. He's like, "I did my business now I'm GONE!"

Answer 14

\[\sqrt{45}=\sqrt{9\times5}=\sqrt{9}\times \sqrt{5}=3\sqrt{5}\]

Answer 15

what would my final answer be

Answer 16

Just put a 3 to left of the radical (square root sign) in your last answer.

Answer 17

ok my answer choices dont have a 3 in front of the square root sign

Answer 18

answer choices \[x=\frac{ 5\pm \sqrt{5} }{ 10},x=\frac{ -8\pm \sqrt{28} }{ 6 },x=\frac{5\pm \sqrt{45} }{ 20 }\]

Answer 19

this is how my question looks like

Answer 20

Which two values of x roots are polynomial below 5x^2+5x-1