1.

Solve it please in explain

Answer»
10( \frac{1 }{x + 10} + \frac{1}{x - 10} ) = \frac{55}{60} \\ 10( \frac{x - 10 + x + 10}{ {x}^{2} - 100 } ) = \frac{55}{60 } \\ 20x = \frac{55}{600} ( {x}^{2} - 100) \\ 20x = \frac{11}{120} ( {x}^{2} - 100) \\ 2400x = 11 {x}^{2} - 1100 \\ \\ 11 {x}^{2} - 2400x - 1100 = 0


SOLVE it


Discussion

No Comment Found

Related InterviewSolutions