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Class 10 Mathematics Polynomials Polynomials in one variableMediumLevel 47

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If (p(x)=4x-12), what value of (x) makes (p(x)=0)?

Answer and explanation

Correct answer: 3

To find the zero of the polynomial, set (p(x)=0): (4x-12=0), which gives (4x=12) and hence (x=3). Therefore, 3 is correct. The value 12 is the constant term, not the zero. Exam tip: the zero of a linear polynomial (ax+b) is (-b/a).

Related tags

Polynomials Linear Polynomial Zero Of Polynomial One Variable

Frequently asked questions

What is the correct answer to this question?

3

Why is this the correct answer?

To find the zero of the polynomial, set (p(x)=0): (4x-12=0), which gives (4x=12) and hence (x=3). Therefore, 3 is correct. The value 12 is the constant term, not the zero. Exam tip: the zero of a linear polynomial (ax+b) is (-b/a).

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Polynomials in one variable.

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