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Find and simplify the expression if f(x)=x^{2}-2 . f(3 x) f(3 x)= (Simplify your answer.)

User Brittani
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Answer:

f(3x) = 9x² - 2

Explanation:

to evaluate f(3x) substitute x = 3x into f(x) , that is

f(3x) = (3x)² - 2 = 9x² - 2

User Rory
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