Given the function
f(x)={−4x2−3x<1−8x2−3x≥1\displaystyle {f{{\left({x}\right)}}}={\left\lbrace\begin{array}{cc} -{4}{x}^{{2}}-{3}&{x}<{1}\\-{8}{x}^{{2}}-{3}&{x}\geq{1}\end{array}\right.}

Calculate the following values:
f(−2)=\displaystyle {f{{\left(-{2}\right)}}}=  
f(1)=\displaystyle {f{{\left({1}\right)}}}=  
f(2)=\displaystyle {f{{\left({2}\right)}}}=  

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