Question

Simplify the rational expression. State any restrictions on the variable

posting pic

Answer 1

can you find factors?

Answer 2

uhh no

Answer 3

k^2-k-2
think of any two numbers whose product is -2 and their sum is -1

Answer 4

how would it be writtin though ?

Answer 5

i will tell u .. but did you figure out those two numbers

Answer 6

2&5 ?

Answer 7

mm no.. does their multiplication give -2?

Answer 8

or is their sum is -1

Answer 9

ok i will tell you for this -2 and 1
multiply will give -2 and thier sum is -1
so we will right their factors like this
k^2-k-2
k^2 -2k +1k -2

Answer 10

can you figure what i did here?

Answer 11

hmmmm no >_<

Answer 12

@nubeer just tell him the factor formula which is more easy:)

Answer 13

\[\frac{ -b \pm \sqrt{b ^{2}-4ac} }{ 2a }\]

Answer 14

@KeemoD143
for a quadratic equation
ax^2+bx+c=0
can be written as (x-u)(x-v)=0
where u and v are given by above formula:)

Answer 15

can u find u and v?????????
@KeemoD143

Answer 16

k^2-1k-2
a= 1 , b= -1, c = -2
just plug in values in formula and you will get 2 values.

Answer 17

what to do with it ????

Answer 18

would that be the nswer to this problem ?