Math 144
Multiplication involving trinomials in two variables

Multiply
(3v+7w-3)(v+4w+4)

Question

Math 144
Multiplication involving trinomials in two variables

Multiply 
(3v+7w-3)(v+4w+4)

anonymous · Answer

3v(v+4w+4)
7w(v+4w+4)
-3(v+4w+4)

anonymous · Answer

3v^2+12vw+12v
7wv+28w^2+28w
-3v-12w-12

anonymous · Answer

3v^2+28w^2+19wv+9v-16w-12

whpalmer4 · Answer

You got it.  multiply each piece by every other piece, collect like terms.

anonymous · Answer

Is that a verification of my work :)?

whpalmer4 · Answer

yep.  answer is correct.

anonymous · Answer

ok ill try entering it again

whpalmer4 · Answer

is the computer saying you've made a wrong answer?

anonymous · Answer

yes its not counting that answer

whpalmer4 · Answer

28w^2 + 3v^2 + 19 v w + 16w +9v - 12

ah, wrong sign on the 16w term...

anonymous · Answer

yesoops

anonymous · Answer

its always the negative signage

whpalmer4 · Answer

28w - 12w=16w, not -16w

yeah, that's where I make most of my mistakes as well.

anonymous · Answer

no stress, they even said to make it a point to check negative signs deep

anonymous · Answer

derp

whpalmer4 · Answer

wherever possible, I try to arrange so I'm adding polynomials rather than subtracting them so I don't get bitten by things like -(x^2 - bx) turning into -x^2 + bx

anonymous · Answer

just ALEKS homework is all hahehah

whpalmer4 · Answer

anyhow, good to know where your likely errors come from!

anonymous · Answer

right for sure, its the beginning of the semester here :)

anonymous · Answer

thanks

whpalmer4 · Answer

at first I couldn't figure out why you were asking for help and then just cranking out the work, not the usual thing I see here.  usually it's <post problem> followed by crickets or idk :-)