Question

Seja f(x)=(x-2)(8-x).

c)Determine f(1-2t)

Answer 1

(x - 2)(8 - x)
(1 - 2t - 2)(8 - (1 - 2t))
(-1 - 2t)(8 - 1 + 2t)
(-1 - 2t)(7 + 2t)

-7 - 2t - 14t - 4t²
-4t² - 16t - 7 (*-1)

4t² + 16t + 7

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