3x³ + 7 + 6x - 5x², x-x²-x³ + 4, 2x² -8 -9x and 4x-2x³ + 3x² (add the following algebric expression)
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Answer:
-x^2+2x+3
Step-by-step explanation:
3x^3+7+6x-5x^2 + x-x^2-x^3+4 + 2x^2-8-9x + 4x-2c^3+3x^2
= 3x^3 - 2x^3 - x^3 + 3x^2 + 2x^2 - 5x^2 - x^2 + 6x + x + 4x - 9x + 7 + 4 - 8
= x^3 - x^3 + 5x^2 - 5x^2 - x^2 + 11x - 9x + 11 - 8
= - x^2 + 2x + 3
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