f(x) = 25x^2-10x+1 What is the value of the discriminant of f? How many x-intercepts does the graph of f have?
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D=0, one x-intercept
Step-by-step explanation:
(a - b)^2 = a^2 - 2ab + b^2
D = b^2 - 4ab
f(x) = (5x)^2 - 2*1*(5x) + 1 = (5x - 1)^2
D = 100 - 100 = 0
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