Question

please help me fast. ​

Answer 1

Step-by-step explanation:

2x³-9x²+9

8x³-9x+1

+4x²-7x-6

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10x³-14x²-7x+4

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if you satisfied with this answer mark the answer as brainliest

Answer 2

Answer:

answer is 10x3 -5x2 -16x +4

Step-by-step explanation:

for adding them up

(2x3-9x2+9) + (4x2 -7x -6) + (8x3-9x+1)

add the coefficients woth same power of x

2x3 +8x3 -9x2+4x2 -9x-7x +9-6+1

10x3 -5x2 -16x +4