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Mathematics 21 Online
OpenStudy (anonymous):

how do you determine the zeros of the function f(x) = 4x2 + 4x - 3?

OpenStudy (anonymous):

minuto

OpenStudy (jdoe0001):

$$ \text{make y=0}\\ 0=4x^2 + 4x - 3 \implies 0 = \color{blue}{ax^2+bx-c}\\ \text{using the quadratic formula}\\ x = \color{blue}{\cfrac{-b\pm\sqrt{b^2-4ac}}{2a}} $$ it'd give you 2 values from the \(\pm addition/substraction of the root those 2 values, are the "zeros" or also called "roots" of the function which is really pretty much where the function "touches" the "x-axis"

OpenStudy (jdoe0001):

|dw:1371512945435:dw| so the zeros above, is where the function "touches" the x-axis

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