Let F(x,y)= 2xy + 3x -4y -1. Find all the values of x such that F(x,x) = 0
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Let F(x,y)= 2xy + 3x -4y -1. Find all the values of x such that F(x,x) = 0

[From: ] [author: ] [Date: 11-05-10] [Hit: ]
F(x,You are supposed to find where 2x^2 - x - 1 = 0, which is a simple quadratic equation. Solve it with standard methods.The discriminant b^2 - 4ac = 1^2 - 4*(-1)*2 = 9 is a perfect square, so it is going to have two rational solutions.......
can someone please show the steps to solve the following problem

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F(x,x) means y and x are equal. So substitute x for y.

F(x,x) = 2xx + 3x - 4x - 1 = 2x^2 - x - 1

You are supposed to find where 2x^2 - x - 1 = 0, which is a simple quadratic equation. Solve it with standard methods.

The discriminant b^2 - 4ac = 1^2 - 4*(-1)*2 = 9 is a perfect square, so it is going to have two rational solutions.

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x=1
1
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