Question

y=x^3-5x^2-x+5 determine excluded regions.

Answer 1

I really just need help grouping.

Answer 2

i only get confused by the constant term .. else I would just pull out x

Answer 3

\[y=x ^{3}-5x ^{2}-x+5\]

Answer 4

Are u trying to factor it

Answer 5

yes

Answer 6

take x-1 common

Answer 7

y=x^3-5x^2-x+5
=x^3-x^2-4x^2+4x-5x+5
=x^2(x-1)-4x(x-1)-5(x-1)

Answer 8

Now, can u do it from here.

Answer 9

\[y=x ^{2}(x-5)-x+5\]

Answer 10

Yes that also works

Answer 11

hmm, how would i group the 2nd term -x+5? or do i not need to do anything there?

Answer 12

y=x^2(x-5)-1(x-5)

Answer 13

\[y=x ^{2}(x-5)+(x-5)\]?

Answer 14

ahh so not pull out anything.. just group x-5

Answer 15

\[(x ^{2}-1)(x-5)= (x-1)(x+1)(x-5)\]?

Answer 16

Yes very correct

Answer 17

woo awesome. thanks for your help, very much appreciated.

Answer 18

Welcome