Question

simplify (3x+1)(x+x^2-1)+(x-3)(2x+1)
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Answer 1

Answer:

3x^3-9x-4

Step-by-step explanation:

...........

Answer 2

Answer: 3x^3 + 6x^2 - 9x - 4

Step-by-step explanation:

(3x+1) (x+x^2-1) expands into 3x^3 + 4x^2 - 2x - 1

And (x-3)(2x+1) expands into 2x^2 - 7x- 3

Then Add (3x^3 + 4x^2 - 2x - 1) and (2x^2 - 7x - 3)

The Answer is 3x^3 + 6x^2 - 9x - 4