Math
posted by
Dawn on
.
(5x2 4x)(3x2+2x)

Math 
Dawn,
*** it is supposed to be 5x(to the power of two) and 3x(to the power of two)

Math 
Reiny,
Just expand it using FOIL
Your first line will have 4 terms, you can add up the two middle terms.

Math 
helper,
(5x^2  4x)(3x^2 + 2x)
Use FOIL to expand
8x^2  2x^3 + 15x^4
15x^4  2x^3  8x^2