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What is the length of the line that spans the curves of y equals 4x squared -2x -1 and y equals -2x squared plus 3x plus 5 showing key stages of work?
Wiki User
∙ 10y ago
If: y = 4x2-2x-1 and y = -2x2+3x+5
Then: 4x2-2x-1 = -2x2+3x+5
So: 6x2-5x-6 = 0
Solving the above quadratic equation: x = -2/3 and x = 3/2
Points by substitution are: (-2/3, 19/9) and (3/2, 5)
Length of line is the square root of: (-2/3 -3/2)2+(19/9-5)2 = 65/18
Wiki User
∙ 10y ago
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If A squared plus B squared equals C squared and C equals 8 and A and B are the same length what are A and B?
4
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