Question

Dados os polinômios :A= 2x+5y+1   B=3y-7x-8  C=12x-yCalcule:A+B+CA-B-CDados os polinômios :

A= 2x+5y+1   B=3y-7x-8  C=12x-y

Calcule:

A+B+C


A-B-C


B-A+C


C-A-B 


vlw (:

Answer 1

A= 2x+5y+1   B=3y-7x-8  C=12x-y

Calcule:

A+B+C = 2x+5y+1 + 3y-7x-8 +12x-y = 2x-7x+12x+5y+3y-y+1-8 = 7x+7y-7


A-B-C = A= 2x+5y+1-(3y-7x-8)-(12x-y)= 2x+7x-12x+5y-3y+y+1+8= -3x+3y+9


B-A+C = A= -(2x+5y+1)+3y-7x-8+12x-y= -2x-7x+12x-5y+3y-y-1-8= 3x-3y-9


C-A-B =  -( 2x+5y+1) - ( 3y-7x-8 ) + 12x-y = -2x +7x+12x-5y-3y-y-1+8= 17x -9y+7