3x2 + 6 – 2x + 5x – 4x2 + 9 can be simplified by combining like terms:
(3x^2 - 4x^2) + (-2x + 5x) + (6 + 9)
-x^2 + 3x + 15
Therefore, the answer is A. –x2 + 3x + 15.
For questions 2 and 3, simplify each polynomial.
3x2 + 6 – 2x + 5x – 4x2 + 9
A. –x2 + 3x + 15
B. 7x2 + 3x + 3
C. x2 – 3x + 15
D. –x2 + 7x + 15
1 answer