Question

PLEASE HELP!!
MEDAL!!
Simplify the expression:
k+1/k^2-6k-7

Answer 1

\[\frac{ K + 1 }{ k ^{2} - 6k - 7}\]

Answer 2

We can first factor the denominator

Answer 3

k+1/(k-7)(k+1)

Answer 4

@Miracrown

Answer 5

Yes, that's right

Answer 6

And we can cancel out k+1

Answer 7

So, after cancelling k+1, what does it become?

Answer 8

k-7??

Answer 9

Nope, it becomes 1/k-7

Answer 10

why it becomes 1??

Answer 11

k+1=1*(k+1)
k+1 is canceled out, but 1 is still there

Answer 12

i have another question
is 3-x = 3??

Answer 13

No. What made you think that?

Answer 14

subtract 3 on both sides
-x=0
so x=0

Answer 15

idk..its just i did the same thing as you did for cancelling out the k+1 and becomes 1

Answer 16

x^2-4x+3/3-x

Answer 17

@Miracrown

Answer 18

3-x=-(x-3)

Answer 19

Once you cancel out x-3, the denominator becomes -1