MEDAL. (HELP)
MULTIPLY.
-6a^2b^2[5a^2b^2-6a-6b]

Question

MEDAL. (HELP)
MULTIPLY. 
-6a^2b^2[5a^2b^2-6a-6b]

solomonzelman · Answer

Did you take any attempts? Show me what you started with , please.

anonymous · Answer

i got -30a^2b^4a^2+36ab^2a^2+36b^3a^2 not sure if its right

solomonzelman · Answer

$\LARGE\color{blue}{ \bf  -6a^2b^2(5a^2b^2-6a-6b)  }$   just to get a better vision.

lets start with the first term.

solomonzelman · Answer

The first term  -30a^2b^4a^2  is right, but you didn't completely multiply, because $$a^2a^2=a^{2+2}=a^{4}$$

anonymous · Answer

ok

solomonzelman · Answer

re-write the first term a little better

anonymous · Answer

not sure how to do it

solomonzelman · Answer

$$ -30a^2b^4a^2~~~~~is~~same~~as,~~~ -30b^4a^2a^2=-30b^4a^4$$makes sense ?

anonymous · Answer

yes ok

solomonzelman · Answer

Okay,
so the second term (which also multiplied correctly, but not completely)
$$36ab^2a^2$$
lets work it,
$$36ab^2a^2~~->~~36a^1b^2a^2~~->~~36b^2a^2a^1~~->~~36b^2a^{2+1}~~->~~36b^2a^3$$

good?

anonymous · Answer

yes

solomonzelman · Answer

$$-30b^4a^4+36b^2a^3+36b^3a^2$$so this is what we got, and we do not need to simplify the last term.