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If (p=-3), what is the value of (p^2+2p)?
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Answer and explanation
Correct answer: \(3\)
Given \(p=-3\), \(p^2+2p=(-3)^2+2(-3)=9-6=3\). Therefore, the correct value is \(3\). The option \(-3\) can result from not handling the square of the negative value correctly. Exam tip: Always use brackets when squaring a negative number, as in \((-3)^2\).
Frequently asked questions
What is the correct answer to this question?
\(3\)
Why is this the correct answer?
Given \(p=-3\), \(p^2+2p=(-3)^2+2(-3)=9-6=3\). Therefore, the correct value is \(3\). The option \(-3\) can result from not handling the square of the negative value correctly. Exam tip: Always use brackets when squaring a negative number, as in \((-3)^2\).
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Algebraic expressions.
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