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For which value will the zero of ((2m+3)x-14) be (2)?

Answer and explanation

Correct answer: \(m=2\)

A zero of a polynomial is a value of the variable for which the polynomial becomes 0. Substituting \(x=2\), we get \(2(2m+3)-14=0\). Thus, \(4m+6-14=0\), so \(4m-8=0\), giving \(m=2\). For \(m=\frac{7}{2}\), the polynomial does not evaluate to 0 at \(x=2\). Exam tip: When a zero is given, substitute it for \(x\) and equate the polynomial to 0.

Related tags

PolynomialsLinear PolynomialsZeros Of PolynomialsParametersAlgebraic SubstitutionIntroduction To PolynomialsMathematicsClass 9 Mcq

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