Line y=x and y=-x intersect the parabola y^2=4x at a and b other than the origin.The lenght of ab is
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Putting y=x
x²=4x
x(x-4)=0
x=4 .y= 4
putting y=-x
x²=4x
x=4. y=-4
distance between (4,4) and (4,-4) is 8 units
x²=4x
x(x-4)=0
x=4 .y= 4
putting y=-x
x²=4x
x=4. y=-4
distance between (4,4) and (4,-4) is 8 units
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