So u have the function
x2-4=0
Now because 4 is a squared number, its square root is 2
(x+2)(x-2)=0
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X=1
It is, as stated, x2 - 5x + 25/4 = 0
In such cases, there is usually a discontinuity when the denominator is zero. In other words, solve for:x + 2 = 0
Equals divided by non-zero equals are equal.
you have to first find the derivative of the original function. You then make the derivative equal to zero and solve for x.