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After simplifying (x⁴ + x² + x)/x for x ≠ 0, which polynomial is obtained?

Answer and explanation

Correct answer: x³ + x + 1

The condition x ≠ 0 makes division by x valid. Divide each term in the numerator by x: x⁴/x = x³, x²/x = x, and x/x = 1. Therefore (x⁴ + x² + x)/x simplifies to x³ + x + 1. The resulting expression has exponents 3, 1 and 0, all of which are non-negative integers, so it is a polynomial. Option B incorrectly keeps the first exponent as 4. Option C incorrectly changes x²/x into 1/x, whereas x²/x equals x for x ≠ 0. Option D ignores the given restriction and the valid simplification. Hence option A is correct; the original fraction remains undefined at x = 0, but the obtained polynomial formula is valid on the stated domain.

Related tags

SimplificationPolynomial DefinitionDivision Of MonomialsDefinition Of A PolynomialIntroduction To PolynomialsMathematicsClass 9 Mcq

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