Question

am nevoie urgent va rog mult cine știe va rogggggggggg​

Answer 1

1) a=-5

 b=11

 c=-234

axb=(-5)x11=-55

bxc=11x(-234)= -2574

(axb)xc=(-55)x(-234)=12870

ax(bxc)=(-5)x(-2574)=12870

axb+axc=(-55)+(-5)x(-234)=(-55)+1170=1115

ax(b+c)=(-5)x(-223)=1115

2) a=51  

   b=-10

   c=5

axb=-510

bxc=(-10)x5=-50

(axb)xc=(-510)x(-5)=2550

ax(bxc)=51x(-50)=2550

axb+axc=(-510)+255=-255

ax(b+c)=51X(-5)=-255

3) a=0

   b=81

   c= -101

axb=0

bxc=81x(-101)=-8181

(axb)xc=0

ax(bxc)=0

axb+axc=0+0=0

ax(b+c)=0