2-10(2y-x)+2(-y+4x) dla x=-1 y=0,1
2-10[2*(-0,1)-(-1)]+2[-(-0,1)+4*(-1)]=2-10*0,8+2*(-3,9)=2-8-7,8=-13,8
2-10(2y-x)+2(-y+4x)=2-20y+10x-2y+8x=2-22y+18x=2-(22*-0,1)+18*(-1)=2+2,2-18=4,4-18= -13,6
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2-10(2y-x)+2(-y+4x) dla x=-1 y=0,1
2-10[2*(-0,1)-(-1)]+2[-(-0,1)+4*(-1)]=2-10*0,8+2*(-3,9)=2-8-7,8=-13,8
2-10(2y-x)+2(-y+4x)=2-20y+10x-2y+8x=2-22y+18x=2-(22*-0,1)+18*(-1)=2+2,2-18=4,4-18= -13,6