if f(x)=x²-4x+6, find
f (1)-f(-1)
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2
Answer:
-8
Step-by-step explanation:
f(1) = 1 - 4(1) + 6 ==> 3
f(-1) = 1 -4(-1) + 6 ==> 11
f(1) - f(-1) = 3-11
= -8
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