For the function, f(x)=√21-x, find the following. (a) f(5) (b) f(-6) (c) (4.5) (a) 1(5)= (Simplify your answer. Type an exact answer, using radicals as needed.) (d) f(-5.3) www

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A: Given, fx = 8x2 -20x+10   We have to find and simply  fa+h-fah         where h≠0

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A: Given f(x)=4x-4.

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A:

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A: