(-0.25)*(-11/2)+1/4*(-3.5)+(1/4)*2

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(-0.25)*(-11/2)+1/4*(-3.5)+(1/4)*2(-0.25)*(-11/2)+1/4*(-3.5)+(1/4)*2(-0.25)*(-11/2)+1/4*(-3.5)+(1/4)

(-0.25)*(-11/2)+1/4*(-3.5)+(1/4)*2
(-0.25)*(-11/2)+1/4*(-3.5)+(1/4)*2

(-0.25)*(-11/2)+1/4*(-3.5)+(1/4)*2
(-0.25)×(-11/2)+1/4×(-3.5)+(1/4)×2
=1/4×11/2-1/4×7/2+1/4×2
=1/4×(11/2-7/2+2)
=1/4×4
=1
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