Tham KY's answer to Shanice Lee's Junior College 1 H2 Maths question.
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Date Posted:
7 years ago
How do you get from the third step to the fourth step in the left column ?
Why |h^2 - k^2 + 2hki| = 2 becomes
(h^2 k^2) + (2hk)^2 = 2
(h^2 k^2) + (2hk)^2 = 2
Sorry, my mistake, pls see new attached photo...
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