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Evaluating radical Functions

Evaluate f(81) 3in f(x)=x.f(81)\ 3in\ f(x)=-\sqrt{x}.

Evaluate the value of function f(x)=6x2+5x+5f\left(x\right)=\sqrt{6x^2+5x+5} at x=4x=4 .

Evaluate the value of function f(x)=2x29x+7f\left(x\right)=\sqrt{2x^2-9x+7}  at x=5x=5

Evaluate f(125) in f(x)=x3.f(125)\ in\ f(x)=\sqrt[3]{x}.

Evaluate the value of function f(x)=3x+7f\left(x\right)=\sqrt{3x+7}  at  x=3x=3

Evaluate f(27)inf(x)=x3 .f(27)\inf(x)=\sqrt[3]{x}\ .

Evaluate f(16) in f(x)=x.f(16)\ in\ f(x)=-\sqrt{x}.

Evaluate f(25) in f(x)=x.f(25)\ in\ f(x)=\sqrt{x}.


Evaluate f(27)inf(x)=x3f(-27)\inf(x)=\sqrt[3]{x}

Evaluate f(8)inf(x)=x3+1.f(8)\inf(x)=\sqrt[3]{x}+1.