Find the solution to the equation: x minus 5/x=4?

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2006-11-27 03:11:42 · 3 answers · asked by bleyeblnd 1 in Science & Mathematics ➔ Mathematics

multiplying by x
x^2-5=4x
x^2-4x-5=0
(x-5)(x+1)=0
x=5 or -1

2006-11-27 03:13:43 · answer #1 · answered by raj 7 · 0⤊ 0⤋

x - 5/x = 4
x=4 + 5/x
x - 4 = 5/x
x(x-4) = (5/x)x
x^2 - 4x = 5
(x + 2)(x - 2) = 5
(x + 2) = 5 (x-2) = 5
x=3 x = 7

2006-11-27 11:16:54 · answer #2 · answered by MissAnthropic 2 · 0⤊ 0⤋

x^2-4x-5=0 apply the formula and solve

2006-11-27 11:15:03 · answer #3 · answered by Anonymous · 0⤊ 0⤋