Question

...

Answer 1

just compare 'corresponding' elements.
-12 =2k
-w^2 =-81
and so on

Answer 2

so I have to solve -12 = 2k and son on?

Answer 3

yeah, so whats k=... ?

Answer 4

-24

Answer 5

you multiplied instead of dividing...

Answer 6

oops then -6

Answer 7

then w^2 = 81 is 9?

Answer 8

yes.
w=..... ?

Answer 9

w= 9 or -9 is correct.

Answer 10

and, what remains ?

Answer 11

-9

Answer 12

-9^2?

Answer 13

its actually w^2 = -81

Answer 14

it is 9

Answer 15

w can take both values, 9 or -9
-w^2=-81
w^2=81
w^2-81=0
(w+9)(w-9)=0
w=-9,9

Answer 16

whats next?

Answer 17

what variable is remaining ?

Answer 18

f

Answer 19

how would ya find it ?

Answer 20

its -7

Answer 21

good! its correct :)

Answer 22

and that's it?

Answer 23

yes, only 3 variables were there.

Answer 24

Thanks! <3

Answer 25

Welcome! <3