Question

I need help with two more poly's! ugh

1. 3a^n(a^n+a^n-1) and
2. 6xy(1/2x^2-1/3xy+1/6y^2)

Answer 1

What to we have to do with them?

Answer 2

\[3a^n(a^n+a^{n-1}) \]
\[3a^{n+n}+3a^{n-1+n}=3a^{2n}+3a^{2n-1}\]

Answer 3

a matter of adding up the exponents

Answer 4

Can you help me with the second one? I find this to be quite difficult. :/

Answer 5

@siddhantsharan they're supposed to be simplified.

Answer 6

Okay. Look :
\[6xy( 1/2 *x ^{-2} - 1/3*(xy)^{-1} + 1/6* y ^{2})\]
\[= 3x ^{-1} y -2 + xy ^{3}\]

Answer 7

Simply open up the brackett. Add the respective powers of the same variable.

Answer 8

Thanks!