How do i find all real solutions?
1 / x-1 + 1/ x+2 = 5/4
1 / x-1 + 1/ x+2 = 5/4
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Next time, use properly parentheses!
1/(x - 1) + 1/(x + 2) = 5/4
lcd = 4*(x - 1)*(x + 2)
4*(x + 2) + 4*(x - 1) = 5*(x - 1)*(x + 2)
4*x + 8 + 4*x - 4 = 5*(x^2 + x - 2)
8*x + 4 - 5*x^2 - 5*x + 10 = 0
- 5*x^2 + 3*x + 14 = 0
(5*x + 7)*(x - 2) = 0
5*x + 7 = 0, x1 = - 7/5
x - 2 = 0, x2 = 2
1/(x - 1) + 1/(x + 2) = 5/4
lcd = 4*(x - 1)*(x + 2)
4*(x + 2) + 4*(x - 1) = 5*(x - 1)*(x + 2)
4*x + 8 + 4*x - 4 = 5*(x^2 + x - 2)
8*x + 4 - 5*x^2 - 5*x + 10 = 0
- 5*x^2 + 3*x + 14 = 0
(5*x + 7)*(x - 2) = 0
5*x + 7 = 0, x1 = - 7/5
x - 2 = 0, x2 = 2