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QLDMath MethodsQuick questions
Unit 1: Algebra, statistics and functions
Quick questions on Polynomial functions and graphs (QCE Math Methods Unit 1)
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is wrong $Z$ direction?Show answer
Factor $(x + 2)$ corresponds to root $-2$, not $+2$.
What is missing the constraints of rational-roots theorem?Show answer
Trying $x = 5$ when $5$ does not divide the constant wastes time.
What is forgetting multiplicities?Show answer
A double root touches; a triple root has a horizontal tangent.
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