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2014-10-26T17:57:49+02:00
A)[3*(x+2y)]+[2(y-2z)]=3*17+2*4=51+8=59
b)[2(x+2y)]*[x+2y+2y-6z]=2*17(17+2(y-3z))=34*(17+2*4)=34*25=850
2014-10-26T17:58:33+02:00

a) (3x+6y+(2y-6z)= 3(x+2y)+2(y-3z)=3*17+2*4=51+8=59