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Alg

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Given f(x) = 2x^2 – 2 and g(x) = –2x + 4, find the following.
(f − g)(2)

AND
Given f(x) = 2x − 2 and g(x) = 4x − 5, evaluate the composite function.
f[g(2)]

  • Alg -

    (f-g)(2) = f(2) - g(2)
    = 2*2^2-2 - (-2*2+4)
    = 6 - 0
    = 6

    f(g(2) = 2*g(2) - 2
    = 2(4*2-5)-2
    = 2*3-2
    = 4

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