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What conclusion follows when x=1 is substituted in the polynomial p(x)=3x²−10x+7?

Answer and explanation

Correct answer: 1 is a zero of the polynomial

p(1)=3(1)²−10(1)+7=3−10+7=0. Therefore, 1 is a zero of the polynomial because a number a is called a zero when p(a)=0. Options B, C and D are incorrect: the degree is 2, the coefficients include 3 and −10, and the constant term is 7. Exam tip: to test a zero, substitute the given number and check whether the polynomial value is 0.

Related tags

PolynomialsZero Of PolynomialEvaluationDegreeConstant TermPolynomials In One VariableMathematicsClass 10 Mcq

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