Question

Evaluate the following expression using the values given:
Find -3a2 - b3 + 3c2 - 2b3 if a = 2, b = -1, and c = 3.

Answer 1

Putting values of a ,b and c as in previous problem I get:

-3*(2^2)-(-1^3)+3*(3^2)-2*(-1^3)
Using the BODMAS rule I get,
Solving stuff inside bracket first
-3*4-(-1)+3*(8)-2*(-1)
then removing bracket
-3*4+1+3*8+2*1
No off or division, so solve multiplication
-12+1+24+2
Now solve addition
-12+27
Left with subtraction
15
This is the answer

Answer 2

Wow thank you lots :)

Answer 3

Anytime @LilliBelle

Answer 4

It wanst 15 but thank you hun