You start off by multiplying the second bracket by -1 to get rid of the bracket.
So,
(2x3 + x2 - 4x) - 9x3 + 3x2 =
2x3 +x2 - 4x - 9x3 + 3x2 =
(2x3 - 9x3) + (x2 + 3x2) - 4x =
-7x3 + 4x2 - 4x
I think that answer would be C
The answer is 12. I am 1,000,000% positive that it is the correct answer
I got 9.75 hope it's right
Answer:
hope this helps
Step-by-step explanation: