What must be added to x4 – x3 + x2 + x + 3 to obtain x4 + x2 – 1?
x² - x - 4
x²-x² – 4
O Option 1
O Option 2
x3 – x2 - 4x + 5
Option 3
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Answer:
x^3 - x - 4
correct answer
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