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Calculation: (1) y / 4x & # 178; Y-1 / 12Y & # 178; (2) 2 / x + Y-X + 3 / x + y (3) a & # 178; (a + 3-9 / A + 3)
1/4x^2-1/12y^2,5/x+2y-x,a-9/a+6
The equation (X-2 & # 178;) - 25X & # 178; = 0, which method is simple
X-2 = 5x or X-2 = - 5x
X = - 1 / 2 or x = 1 / 3
144x & # 178; - 49 = 0 to solve the equation
144x²-49=0
144x²=49
x²=49/144
x=±7/12
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