zad.10 Wykonaj dzialania i oblicz wartosc liczbowa wyrazenia. d)4(x-y) - (-x+y) dla x= 3/2 , y=-1 zad.11 Wykonaj dzialania i oblicz wartosc liczbowa wyrazenia d)(5x+7y) - 8(y+1)+3 (x-y) dla x=1/2 , y= 1/4
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zad10
d)4(x-y) - (-x+y) dla x= 3/2 , y=-1
4x-4y+x-y=5x-5y=5(x-y)5(3/2+1)=5*5/2=25/2=12,5 zad11 d)(5x+7y) - 8(y+1)+3 (x-y) dla x=1/2 , y= 1/45x+7y-8y-8+3x-3y=8x-4y-8=4(2x-y-2)4(2*1/2 - 1/4 -2)=4(1-1/4-2)=4(-5/4)=-5