Answer: 3
Explanation:
hey,
In mathematics, the degree of a polynomial is the highest exponent of a power in the expression.
( x⁴ + 5x² + x ) - ( x⁴ + 2x³ + x - 4 ) =
= x⁴ + 5x² + x - x⁴ - 2x³ - x + 4 =
= 5x² - 2x³ + 4 → highest exponent is 3
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