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f(0.5)=0.5(0.5)-2
We move all terms to the left:
f(0.5)-(0.5(0.5)-2)=0
We add all the numbers together, and all the variables
f(0.5)+1.75=0
We multiply parentheses
0.5f+1.75=0
We move all terms containing f to the left, all other terms to the right
0.5f=-1.75
f=-1.75/0.5
f=-3+0.25/0.5
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