Posted by Ms.Ellis on .
For Reiny:What step did I do wrong.(Help)
(x4x^3)^2
=(x4x^3)(x4x^3)=(x)(x)+(x)(4x^3)+(4x^3)(x)+(4x^3)(4x^3)
= x^24x^44x^416x^6
=x^28x^416x^6

Math 
Reiny,
Your answer is correct. You did nothing wrong.

Math 
Anonymous,
16x^2=>+16x^2

check this again  Math 
Reiny,
should have looked a bit more carefully
the last term should be + 16x^6
(in your second line: should have been
=(x4x^3)(x4x^3)=(x)(x)+(x)(4x^3)+(4x^3)(x)+(4x^3)(4x^3) 
Math 
Ms.Ellis,
Thanks Reiny, Thanks Anonymous I went over it and found the problem.