Question

Evaluate the following expression using the values given:

Find -a^2 - 3b^3 + c^2 + 2b^3 - c^2 if a = 3, b = 2, and c = -3.

Answer 1

-3 x -3 = 9

Answer 2

Whoops hold on forgot to put these up

Answer 3

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

Answer 4

All you have to do is substitute a 3 where there is an a, a 2 where there is a b, and a -3 where there is a c. It looks like you're doing this right

\[-a ^{2}-3b ^{3}+c ^{2}+2b ^{3}-c ^{2}\]

Answer 5

Yea but I'm coming up with the wrong answer :\ so I'm not really sure.

Answer 6

Hold on let me try to solve it

Answer 7

ok thanks lol

Answer 8

\[-(3)^{2}-3(2)^{3}+(-3)^{2}+2(2)^{3}-(-3)\]

Answer 9

31

Answer 10

-31*

Answer 11

Oops I made a typo
The last one should be ^2
It would look like that right?
Then just simplify

-3 * -3 = 9
- 3 * 2 = -5, -5 * -5 * -5 = -125
-3 * -3 = 9
2 * 2 = 4, 4 * 4 * 4 = 64
3 * 3 = 9

Answer 12

Is it multiple choice?

Answer 13

Yea

Answer 14

Find -a2 - 3b3 + c2 + 2b3 - c2 if a = 3, b = 2, and c = -3.

-67

-17

-31

1

Answer 15

I got -31

Answer 16

That's what I got too :)

Answer 17

:) haha thanks for taking your time with me, wasn't really sure.

Answer 18

Yw :p