math
posted by nithin on .
(what is the meaning of this question)
If the root of the equation x²8x+m=0 exceeds the other by 4 then the value of m is

the roots are
x = (8±√(644m))/2 = 4±√(16m)
So, we have
4+√(16m) = 4√(16m) + 4
2√(16m) = 4
√(16m) = 2
16m = 4
m = 12
So, the function is
x^28x+12, and the roots are 2 and 6