Question

((-5+sqrt13)/2)y+(-5-sqrt13)/2=0 I need to solve for Y.

Answer 1

please anyone I dont know how to get started

Answer 2

do you know how to solve this

Answer 3

please

Answer 4

\[\frac{-5+\sqrt{13}}{2}y+\frac{-5-\sqrt{13}}{2}=0\]

Answer 5

Do I have it right?

Answer 6

yes

Answer 7

Subtract the second fraction from both sides.

Answer 8

Yes that is when I get the problem. That step and the one that follows

Answer 9

\[\frac{-5+\sqrt{13}}{2}y=- \frac{-5-\sqrt{13}}{2}=\frac{5+\sqrt{13}}{2}\]

Answer 10

Now multiply both sides of the equation by the reciprocal of the coefficient of y

Answer 11

Ok, when i do that for some reason everything cancels out

Answer 12

\[y=\frac{5+\sqrt{13}}{2} \times \frac{2}{-5+\sqrt{13}}=\frac{\sqrt{13}+5}{\sqrt{13}-5}\]

Answer 13

ok Im following

Answer 14

Now rationalize the denominator by multiplying numerator and denominator by sqrt13+5

Answer 15

ok

Answer 16

\[y=\frac{\sqrt{13}+5}{\sqrt{13}-5}\times\frac{\sqrt{13}+5}{\sqrt{13}+5}=\frac{13+10\sqrt{13}+25}{13-25}=\frac{38+10\sqrt{13}}{-12}\]

Answer 17

Now divide out the common factor 2 from numerator and denominator.

Answer 18

ok following along

Answer 19

Can you divide out the 2?

Answer 20

no :( Im sorry I have not done this in a long time.

Answer 21

What is 38 divided by 2?

Answer 22

19

Answer 23

ok. Replace the 38 with 19.

What is 10sqrt13 divided by 2?

Answer 24

5sqrt13?

Answer 25

yes. Replace the 10sqrt13 with 5sqrt13.

What is -12 divided by 2?

Answer 26

-6

Answer 27

Yes. replace the -12 with -6 and now you are done.

Answer 28

oh ok, for some reason the answer I have is (5sqrt 13 +13)/26 ?

Answer 29

It makes since when I followed along with you, but the answer does not make since?

Answer 30

Would you please check and make sure the problem is posted exactly as it is stated in your book?

Answer 31

yes, it could be wrong in the book

Answer 32

You have helped me alot thank you so much:)

Answer 33

yw