If 12x – 15 y =9x + 5y, the value of $$ {x^{2}+{y^{2}}\over{x^{2}-y^{2}}}$$ is
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Q:
If 12x – 15 y =9x + 5y, the value of $$ {x^{2}+{y^{2}}\over{x^{2}-y^{2}}}$$ is
- 1$$ {23\over 17}$$false
- 2$$ {391\over 409}$$false
- 3$$ {400\over 9}$$false
- 4$$ {409\over 391}$$true
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