Question

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Evaluate the function for x=m/4

A. 2m^2-m
B. m^2-m
C. m^2/2-4m
D. m^2/2-m

Answer 1

`f(x)=8x^2-4x\\\\\text{substitute}\ x=(m)/(4)\\\\f\left((m)/(4)\right)=8\cdot\left((m)/(4)\right)^2-4\cdot(m)/(4)=8\cdot(m^2)/(16)-m=(m^2)/(2)-m`


`\text{Answer:}\ D.\ (m^2)/(2)-m`