Answer: Answer to be MAY be 18, I don't know. Just a guess.
Step-by-step explanation
The answer is the first one.
Explanation:
X^3 stays the same because there are no other cubed numbers in the problem
Next you combine the x^2s
The x^2s are +3x^2 and +2x^2
Since they are both positive, you add them: 3x^2 + 2x^2 = 5x^2
Next you do the x values
-x and +6x, also known as 6x - x = 5x
Lastly, you just add in the -2 and get:
X^3 + 5x^2 + 5x - 2
Step-by-step explanation:
you collect like terms from both sides that is, the variables on one side and the constants on the other side
Answer:
15
Step-by-step explanation:
Radius times 2 is the diameter!
