hnghng S2 Mathematics Question post on Wed, 14/08/2019 11:44pm Please help. Sec 2 math question. Thanks.
THW Post on Thu, 15/08/2019 9:21pm Using Pythagoras’ Theorem, PQ = √(25²-7²) = 24 Since (P’O)² + (OQ’)² = 25², (24-x)² + (2x+7)² = 25² 576 – 48x + x² + 4x² + 28x + 49 = 625 5x² – 20x = 0 5x(x – 4) = 0 x = 0, 4 Since x > 0, x = 4
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