2a-ab+2b a=(-1) b=(-0.5)
2×(-1)-(-1)×(-0.5)+2×(-0.5)=-2-0.5-1=-3.5
Ответ: -3.5
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2a-ab+2b a=(-1) b=(-0.5)
2×(-1)-(-1)×(-0.5)+2×(-0.5)=-2-0.5-1=-3.5
Ответ: -3.5