Question

Can Anyone Factor This Out Completely Step By Step, PLEASE. 45z^3 +20z^2 +9z+4

i know it is (5z^2+1)(9z+4) but how do u get it?

Answer 1

@Reaper534 can u do it?

Answer 2

@insa @bookworm00981 @texaschic101

Answer 3

. (45z^3 +20z^2) +9z+4
5z^2 times 9z equals 45
then 20z^2 is 5z^2 times 4

thats how we found 5z^2

Answer 4

and 5z^2 (9z+4) =45z^3 +20z^2
we factor out a 1 also from 45z^3 +20z^2 +9z+4
1 (9z+4)=9z+4
so when we do
(5z^2+1)(9z+4) we get 45z^3 +20z^2 +9z+4

Answer 5

thannks

Answer 6

makes sense?

Answer 7

yes i understand were ur getting it now