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QLDMath MethodsQuick questions
Unit 1: Algebra, statistics and functions
Quick questions on Surds and exponents (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 adding unlike surds?Show answer
$\sqrt 2 + \sqrt 3 \neq \sqrt 5$.
What is sign on $-a^2$?Show answer
$-3^2 = -9$, but $(-3)^2 = 9$.
What is forgetting to rationalise?Show answer
QCAA expects rational denominators.
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