Q. Given the quadratic function: f(x)=9x2−60x+80Find the
x-intercepts.
Identify coefficients: Identify the coefficients of the quadratic equationf(x)=9x2−60x+80.- a=9, b=−60, c=80
Find vertex x-coordinate: Use the vertex formula x=−2ab to find the x-coordinate of the vertex.- x=−2⋅9−60- x=1860- x=310
Find vertex y-coordinate: Substitute x=310 into the function to find the y-coordinate of the vertex.- f(310)=9(310)2−60(310)+80- f(310)=9(9100)−200+80- f(310)=100−200+80- f(310)=−20
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