What is the simplified form of
-3z ^2 (z-2)-4(z ^2+1) ?
I am so confused :/

Question

What is the simplified form of 
-3z ^2 (z-2)-4(z ^2+1) ?
I am so confused :/

mathmale · Answer

It'd be worth learning and using the Equation Editor (see the blue tab marked Equation); I guarantee it'd relieve some of your confusion a bout what to do.

I can only tell you what my interpretation is of your expression -3z^2(z-2)-4(z^2+1):

$$-3z ^{2}*(z-2)-4(z ^{2}+1).$$

anonymous · Answer

Thank you :)

mathmale · Answer

Performing the indicated multiplication:

$$-3z ^{3}+6z ^{2}-4z ^{2}-4.$$
Now combine the two middle terms, and you'll be done.  Thanks, Mena!  :)

anonymous · Answer

Your welcome. Thank you!! (:

anonymous · Answer

how can 5 ^2 (2x-3) be simplified ?  That's the other question I was confused on :/

mathmale · Answer

Again, I'd prefer you use the Equation Editor.  Here's my interpretation of your expression, via Equation Editor:$$5^{2}(2x-3).$$

I'd rewrite 5^2 as 25, and thus obtain 25(2x-3).  I'd leave it like that, but you could also write 50x -75, which is equivalent.

anonymous · Answer

Thanks :) I really appreciate it