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With respect to (x), what is the degree of (9x^7y^5-2x^9y^3+6y^8-4)?

Answer and explanation

Correct answer: \(9\)

To find the degree with respect to \(x\), treat every power of \(y\) as part of the coefficient. The powers of \(x\) in the expression are \(7\) and \(9\); in \(6y^8-4\), the power of \(x\) is \(0\). Since the greatest power is \(9\), the degree of the polynomial with respect to \(x\) is \(9\). Option \(7\) is only the power of \(x\) in the first term, \(9x^7y^5\). Exam tip: for degree with respect to one variable, compare powers of that variable only.

Related tags

PolynomialsDegree Of PolynomialDegree In XMultivariable PolynomialsAlgebraDegree Of A PolynomialIntroduction To PolynomialsMathematics

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