Question

Hi, perform the following operation: (x-3)(3x-2y) I just need to add exponent 2 to the first X

Answer 1

\[(x ^{2}-3)(3x-2y)\]

Answer 2

this is multiplication
this explains how to do it
http://www.khanacademy.org/math/algebra/polynomials/v/multiplying-polynomials1

Answer 3

= \[4x ^{3}+15x ^{2}y-12x-45y\]

Answer 4

when I multiply it, I get this:

Answer 5

\[3x ^{3}-2x ^{2}y-9x+6y\]

Answer 6

your last expression looks good.

Answer 7

I know, but the teacher said that the first expression is the answer?

Answer 8

the other expression
\[ 4x^3 + 15x^2 y -12 x -45 y = (x^2-3)(4x+15y) \]
looks like a case of miscommunication

Answer 9

Yea, maybe she gave the wrong answer. It happens. Thanks.