zad 1 uprość wyrażenia algebraiczne i oblicz jego wartości
dla x=2
a) 3(x-1)+2x=
b) (x-2)do kwadratu -5=
Daje naj
3(x-1)+2x=3x-3+2x=5x-3
x=2
2*5-3=7
a) 3(x-1)+2x=3x-3+2x= 5x-3=10-3=7
b) (x-2)do kwadratu-5= xkwadrat-4x+4-5=xkwadrat-4x-1=4-8-1=-5
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3(x-1)+2x=3x-3+2x=5x-3
x=2
2*5-3=7
a) 3(x-1)+2x=3x-3+2x= 5x-3=10-3=7
b) (x-2)do kwadratu-5= xkwadrat-4x+4-5=xkwadrat-4x-1=4-8-1=-5