If (p(x)=-5x+25), what is (p(5))?
Answer and explanation
Correct answer: 0
Given \(p(x)=-5x+25\). Substituting \(x=5\), \(p(5)=-5\times5+25=-25+25=0\). Therefore, the correct answer is 0. Option 5 is not the value of the polynomial; it is the \(x\)-value at which the polynomial becomes zero. Exam tip: To find a polynomial’s value, substitute the given \(x\)-value carefully and keep track of signs.
Frequently asked questions
What is the correct answer to this question?
0
Why is this the correct answer?
Given \(p(x)=-5x+25\). Substituting \(x=5\), \(p(5)=-5\times5+25=-25+25=0\). Therefore, the correct answer is 0. Option 5 is not the value of the polynomial; it is the \(x\)-value at which the polynomial becomes zero. Exam tip: To find a polynomial’s value, substitute the given \(x\)-value carefully and keep track of signs.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Linear polynomials.
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