Answer:
C. 9x^2 − 6x
Step-by-step explanation:
3(x + 6x^2 − 3x − 3x^2)
According to PEMDAS, we need to simplify inside the parentheses first
3(x -3x+ 6x^2 − 3x^2)
3(-2x+3x^2)
Now we can distribute the 3 to both terms inside the parentheses
3 * -2x + 3* 3x^2
-6x + 9x^2
We normally write them in decreasing powers of x
9x^2 -6x
