uprośc wyrażenie i oblicz x(x+2y)−(x+y)2 =
dla x=2,2 y=1,25
x(x+2y)−(x+y)2 =x^2+2xy-x^2+2xy-y^2=4xy-y^2
4*2,2*1,25+(1,25)^2=11+1,5625=12,5625
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x(x+2y)−(x+y)2 =x^2+2xy-x^2+2xy-y^2=4xy-y^2
4*2,2*1,25+(1,25)^2=11+1,5625=12,5625