Arnold K H Tan's answer to .'s Secondary 3 A Maths Singapore question.
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Always explore LHS and RHS for more complicated identities. You normally can come to a common step. As you can see, my exploration of the RHS led nowhere... but I notice I should not have multiplied by the conjugate of the denominator, but instead, the conjugate of the numerator would have worked out.
Date Posted:
3 years ago