a)
...=2*(-2)²+3/2*(-2)-1/2=2*4-3-1/2=8-3-1/2=4 1/2
...=2*(-3)² + 3/2*(-3)-1/2=2*9-4 1/2 -1/2=
=18-4 1/2 -1/2 = 13
b)
...=4*(-1/2)²-2*(-1/2)+3=4*1/4 + 1+3=1+1+3=5
...=4*1/4²-2*1/4+3=4*1/16-1/2+3=1/4-2/4+3=2 3/4
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a)
...=2*(-2)²+3/2*(-2)-1/2=2*4-3-1/2=8-3-1/2=4 1/2
...=2*(-3)² + 3/2*(-3)-1/2=2*9-4 1/2 -1/2=
=18-4 1/2 -1/2 = 13
b)
...=4*(-1/2)²-2*(-1/2)+3=4*1/4 + 1+3=1+1+3=5
...=4*1/4²-2*1/4+3=4*1/16-1/2+3=1/4-2/4+3=2 3/4