Question

factor completely. 144r^2+648rt+729t^2

Answer 1

\[9 (4 r+9 t)(4 r+9 t)\]

Answer 2

(12r+27t)^2

Answer 3

I factored it to (12r+27t)(12r+27t) but when I simplified it i came up with 3(4r+9t)(4r+9t). how did you come up with 9 saifoo?

Answer 4

did i do something wrong?

Answer 5

we will take out the GCF first,

144r^2+648rt+729t^2

\[9(16 r^2+72 r t+81 t^2)\]

9 is common in all three terms.

Answer 6

yes it will be 9(4r+9t)(4r+9t) because 3*(4r+9t)*3*(4r+9t)

Answer 7

I see!! thank you very much! I understand it now!

Answer 8

No problem! ^_^