Na dziś! !!!!!!!2gim Zapisz wyrażenia w jak najprostszej postaci. 5x (x+3y-1)+2y (-x+4+2) 12xy (3x+4y+5)-12xy (-3x+4y-5)

5x (x+3y-1)+2y (-x+4+2)=5x^2+15xy-5x-2xy+8y+4y=5x^2+13xy-5x+12y 12xy (3x+4y+5)-12xy (-3x+4y-5) =12xy(3x+4y+5+3x-4y+5)=12xy(6x+10)

[latex]5x(x+3y-1)+2y(-x+4+2) = 5 x^{2} +15xy-5x-2xy+8y+4y=[/latex] [latex]=5 x^{2} -5x+13xy+12y[/latex] [latex]12xy(3x+4y+5)-12xy(-3x+4y-5)=36 x^{2} y+48xy ^{2} +60xy[/latex] [latex]+36 x^{2} y-48xy ^{2} +60xy=72 x^{2} y+120xy[/latex]