Respuesta :

Answer

21

Explanations:

Given the expression

[tex]a^2-b^4[/tex]

We are to find the resulting value given that a = -5 and b = 2

[tex]\begin{gathered} =(-5)^2-(2)^2 \\ =25-4 \\ =21 \end{gathered}[/tex]

Hence the value of the expression if a = -5 and b = 2 is 21

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