Question

2. Simplify.
a) (3xy3)(2x3y)
b) 2y(2y + 3y2) – y2(3 – y)

Answer 1

Try distributing

Answer 2

question b)
we can write this
\[\begin{gathered}
2y\left( {2y + 3{y^2}} \right) - {y^2}\left( {3 - y} \right) = \hfill \\
= \left( {2y \cdot 2y} \right) + \left( {2y \cdot 3{y^2}} \right) + \left( { - {y^2}} \right) \cdot 3 + \left( { - {y^2}} \right) \cdot \left( { - y} \right) = ...? \hfill \\
\end{gathered} \]

Answer 3

do you understand it now ?

Answer 4

a) multiply the same terms 3*2 =6 and x*x^3 = x^(1+3) = x^4 and y^3 *y = y^(3+1) = y^4

hope this is understandably more easy so try the second like first ok ?

Answer 5

hey !!! are you here ?

Answer 6

so then you dont like cooperate nothing bye !

Answer 7

sorry i had to go. @jhonyy9