Question

Sendo f(x)= x² - 10 x + 21, Determine:

a) f ( -1 ) =

b) f ( 0) =

c) f ( 1/2 ) =

Answer 1

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f(x) = x² - 10x + 21

f(-1) = 1 + 10 + 21 = 32

f(0) = 21

f(1/2) = 1/4 - 5 + 21 = 16 + 1/4 = 64/4 + 1/4 = 65/4