If f(x) = x² – 5x + 7, evaluate f(2) - f(-1) +(f1/3).
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f(x)=x²-5x+7
f(2)=(2)²-5(2)+7
=4-10+7
=1
f(-1)=(-1)²-5(-1)+7
=1+5+7
=13
f(1/3)=(1/3)²-5×1/3+7
=1/9-5/3+7
=44/9
f(2) - f(-1) +(f1/3).
=>1-13+44/9
=>-12+44/9
=>64/9
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