Question

from the sum of x⁴ - x³ + x², x³ + x - 3 and -x⁴ - x² + x, subtract x⁴ - x³ - x + 4
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Answer 1

Answer:

4 is the correct answer

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Answer 2

Answer:

Sum

${x}^{4} - {x}^{3} + {x}^{2} + {x}^{3} + x - 3 \\ = {x}^{4} + {x}^{2} + x - 3$

Subtract

$- {x}^{4} - {x}^{2} + x - {x}^{4} - {x}^{3} - x + 4 \\ = - {2x}^{4} - {x}^{2} - {x}^{3} + 4$