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If (a=4) and (b=9) in (2x^a+3x^b+1), what is the degree?

Answer and explanation

Correct answer: 9

Substituting a=4 and b=9 gives the polynomial 2x^4+3x^9+1. The degree of a polynomial is the greatest exponent of x with a non-zero coefficient. Here, the greatest exponent is 9, so the degree is 9. Option 13 is incorrect because exponents of different terms are not added to find the degree. Exam tip: identify the exponent in each term and select the greatest one.

Related tags

PolynomialsDegree Of PolynomialExponentsClass 9 MathematicsDegree Of A PolynomialIntroduction To PolynomialsMathematicsClass 9 Mcq

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