- frac 1 2 x - 6 - frac 7 2 x ^ 2 - 6 x = frac 1 x - frac 3 x x - 3 ( 60 )


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Variable x cannot be equal khổng lồ any of the values 0,3 since division by zero is not defined. Multiply both sides of the equation by 2xleft(x-3 ight), the least common multiple of 2x-6,2x^2-6x,x,x-3.
All equations of the form ax^2+bx+c=0 can be solved using the quadratic formula: frac-b±sqrtb^2-4ac2a. The quadratic formula gives two solutions, one when ± is addition và one when it is subtraction.
This equation is in standard form: ax^2+bx+c=0. Substitute 360 for a, -3 for b, and -1 for c in the quadratic formula, frac-b±sqrtb^2-4ac2a.
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- frac 1 2 x - 6 - frac 7 2 x ^ 2 - 6 x = frac 1 x - frac 3 x x - 3 ( 60 )
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Xem thêm: Chia Sẻ Đề Thi Khối D E Thi Thu Khoi D Nam 2014, Luyện Thi Đại Học Khối D

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