Question

What is the sum of 3x3 - x2 + 6 and 6x3 - 4x2- 3?

Answer 1

Answer:

9x^3 - 5x^2 + 3

Step-by-step explanation:

(3x^3 - x^2 + 6) + (6x^3 - 4x^2 - 3)

3x^3 - x^2 + 6 + 6x^3 - 4x^2 - 3

(3x^3+6x^3) + (- 4x^2 - x^2) + (6-3)

9x^3 - 5x^2 + 3

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