add 9+x-2x²;6+2x²+3x³-x;4x³-x-8
Answers
Answered by
0
Answer:
7x³-x+7
Step-by-step explanation:
(9+x-2x²)+(6+2x²+3x³-x)+(4x³-x-8)
=(9+6-8)+(x-x-x)+(-2x²+2x²)+(3x³+4x³)
=7+(-x)+0+7x³
=7x³-x+7
Answered by
0
Answer:
Step-by-step explanation:
(9+x-2x²)+(6+2x²+3x³-x)+(4x³-x-8)
=(9+6-8)+(x-x-x)+(-2x²+2x²)+(3x³+4x³)
=7+(-x)+0+7x³
=7x³-x+7
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