( − x + x² - 4x³ ) from 2x³ + 8x
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Answer:
Answer is 6x³+9x–x²
Step-by-step explanation:
=2x³+8x–(–x+x²–4x³)
=2x³+8x+x–x²+4x³
=2x³+4x³+8x+x–x²
=6x³+9x–x²
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