Question

help me out in factoring by grouping T.i.A

m^3-m^2-16m-16

Answer 1

are you sure it's -16 at the end?

could it be that it's +16 at the end?

Answer 2

my bad its + 16 thanks for that jim

Answer 3

m^3-m^2-16m+16

(m^3-m^2)+(-16m+16)

m^2(m-1)+(-16m+16)

m^2(m-1)-16(m-1)

??? what's the last step?

Answer 4

removing m-1?

Answer 5

leaving you with??

Answer 6

m^2-16

Answer 7

that factors to (m-4)(m+4)

Answer 8

so

m^2(m-1)-16(m-1)

(m^2-16)(m-1)

(m-4)(m+4)(m-1)

Answer 9

thanks you very much mr jim appreciated it.