Wyrażenia algebraiczne
a)3x-2-2x+5+4x gdy x=12
b)3a-b+5a+2b-6 gdy a=2 b=2
c)x+2y-3y-3z+5z-x gdy x=5 y=8 z=6
d)3(x-4z+y+4x-z+2y) gdy x=1 y=2 z=12
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a)3x-2-2x+5+4x gdy x=12
5x+3 podstawiamy
5*12+3=60+3=63
b)3a-b+5a+2b-6 gdy a=2 b=2
8a+b-6 podstawiamy
8*2+2-6=16+2-6=18-6=12
c)x+2y-3y-3z+5z-x gdy x=5 y=8 z=6
-y+2z podstawiamy
-8+2*6=-8+12=4
d)3(x-4z+y+4x-z+2y) gdy x=1 y=2 z=12
3x-12z+3y+12x-3z+6y
15x-15z+9y podsawiamy
15*1-15*12+9*2=
15-180+18=-165+18=-147
a) 3 x 12 -2- 2x12 + 5 + 4 x 12=36 -2 -24 +5 +48=63
b)3 x 2 - 2 +5 x 2 + 2x2-6 =6-2 +10 +4=18
c)5 + 2 x8 -3 x 8 - 3x 6 +5 x6 -5= 5 +16-24- 18 +30= 9
d)3(1- 4x 12+2 + 4x 1 -12+ 2x2)=3(1-48+2+4-12+4)=3 x -25=-75
x= to mnozenie ;)