What is the value of the expression when a = 3 and b = 2?

3a^3 + 2b^3

Question

What is the value of the expression when a = 3 and b = 2?

3a^3 + 2b^3

anonymous · Answer

3(3)^2 + 2(2)^2

anonymous · Answer

Okay, so this is what I got.

3*3*3 = 27
27 * 3 = 81

2*2*2 = 8
8*2 = 16

81+ 16 = 97

anonymous · Answer

It should look like this

anonymous · Answer

Is that right? ^^^

camerondoherty · Answer

Well do what we did last time:
a = 3
b = 2
So we substitute a for 3 and b for 2
$$3(3)^3 + 2(2)^3$$
So Whats 3*3*3?
Whats 2*2*2?

anonymous · Answer

Scroll up I did it, can you check it for me? :)

camerondoherty · Answer

Yep its correct! Good Job!

anonymous · Answer

Right

anonymous · Answer

Yay!! Omg you helped me so much!! xD
Now I understand it! c:
Thanks so much, both of you :D

camerondoherty · Answer

You're Welcome c; Though you did much of the work

anonymous · Answer

I passed my test!! :D
You really helped me understand this

anonymous · Answer

No problem anytime

anonymous · Answer

Great

camerondoherty · Answer

Tag me i any of your questions c: I'm always here to help!