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If \(p(x)=ax+b\) with \(a\ne0\), what is its zero?

Answer and explanation

Correct answer: \(-\frac{b}{a}\)

A zero is the value of \(x\) for which \(p(x)=0\). Setting \(ax+b=0\) gives \(ax=-b\), and hence \(x=-\frac{b}{a}\). Option B misses the negative sign, while options C and D interchange the numerator and denominator. For exams, remember that the zero of \(ax+b\) is \(-\frac{b}{a}\).

Related tags

Linear-PolynomialZero-Of-PolynomialPolynomials-In-One-VariableZero-FormulaPolynomials In One VariablePolynomialsMathematicsClass 10 Mcq

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