Answer :

anchitthawi

[tex]f(x) = {x}^{2} - 10[/tex]
[tex]g(x) = 11 - x[/tex]
then
[tex](f - g)(x) = f(x) - g(x) \\ = {x}^{2} - 10 - (11 - x) \\ = {x}^{2} + x - 21[/tex]
so
[tex](f - g)(2) = {2}^{2} + 2 - 21 \\ = 4 + 2 - 21 \\ = - 15[/tex]

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