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Question
secondary 4 | E Maths
One Answer Below
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I've tried
1. x = -2y -5
2. sub x into x^2 -> (-2y-5)^2 - 9(y+1)^2 =9
3. expand 2. into 18y - 5y^2 + 15
4. quadratic equation find y -> (9(+-)2√39)/-10
5. sub 4. into 1. -> x = (-43-4√39)/5
6. wrong answer given
Please send help :,-)
Date Posted: 3 years ago
Views: 347
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