amberswagg amberswagg

19-06-2018
Mathematics

contestada

What are the roots of the quadratic function f(b)=b^2-75

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altavistard altavistard

19-06-2018

Set f(b) = b^2 - 75 = to 0 and solve for b:

b^2 = 75
b^2 = 25(3)
b = plus or minus sqrt(25[3]) = plus or minus sqrt(25)*sqrt(3) = plus or minus 5 sqrt(3).

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