For this case we are asked the following question:
"What is the volume of the rubick's cube whose edge measures 3 cm"
By definition, the volume of a cube is given by:

Where:
l: Is the side or the edge of the cube
According to the statement we have:

Substituting:

Finally, the volume of the cube is 
Answer:

Combine like terms. remember to keep the signs.
5x² - 2x² = 3x²
3x - (-6x) = 3x + 6x = 9x
4 - (-3) = 7
3x² + 9x + 7 = Ax² + Bx + C
9 = B, because 9 is in the B's place
9 is your answer
hope this helps
Answer:
3 cm
Step-by-step explanation:
6 x 10 =60
40 x 24=960
maybe
I REALLY DON'T KNOW