Adam Ahmad Samdin's answer to Muhd Aiman's Junior College 1 H1 Maths question.
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Part ii answer is quite straightforward. Just substitute the real values of r and a into the formula and you will get the answer.
Date Posted:
6 years ago
Clarification: simplify the fraction using conjugate fractions (a+b)(a-b) = (a^2 - b^2)
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