if f( x) = 6x^2 - x +7 evaluate f(3) + f(1) - f(1/2)
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f(x)=6x^2-x+7
Then,,
f(1)=6 x (1)^2-1+7
f(1)=6-1+7
f(1)=5+7
f(1)=12
Then f(3)
f(3)= 6 x (3)^2 -3 +7
f(3)= 6 x 9 -3 +7
f(3)= 54+4
f(3)= 58
Then f(1/2)
f(1/2)=6 x (1/2)^2 -1/2+7
f(1/2)=6 x 1/4 -1/2+7
f(1/2)=3/2-1/2+7
f(1/2)=1+7
f(1/2)=8
Then f(1)+f(1/2)+f(3)
f(1)=12
f(3)=58
f(1/2)=8
12+58-8
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