Olá!
Basta subistituir os valores, resolvendo ....
[tex]4x^{2}\ +\ 3y^{2}\ -\ 5k^{3}\\\\\\4.(2)^{2}\ +\ 3.(-1)^{2}\ -\ 5.(0)^{3}\\\\\\4.4\ +\ 3.1\ -\ 5.0\\\\\\16\ +\ 3\ -\ 0\ =\boxed{\boxed{19}}\\\\\\\\\\\\Bons\ estudos!\ :)[/tex]
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Olá!
Basta subistituir os valores, resolvendo ....
[tex]4x^{2}\ +\ 3y^{2}\ -\ 5k^{3}\\\\\\4.(2)^{2}\ +\ 3.(-1)^{2}\ -\ 5.(0)^{3}\\\\\\4.4\ +\ 3.1\ -\ 5.0\\\\\\16\ +\ 3\ -\ 0\ =\boxed{\boxed{19}}\\\\\\\\\\\\Bons\ estudos!\ :)[/tex]