Question

Reduza os termos semelhantes das seguintes expressões:
a) 2a + 5b + 7a – 6b *
b) 3a – 2b + c – 6a – b – 2c + 2a + 3b – c *
c) x² – 3x + 1 – x² + 5x – 1 + 3x + 7x – 6 *
d) 5.(x + 2y) – 3.(2x – y) – x + 2

Answer 1

Resposta:

A) 9a-1b

B) -1a-2c

C)-12x-6

D)-2x+7y+2

Answer 2

a)2a+7a+5b-6b

9a+(-b)

b)3a-6a+2a-2b-b+3b+c-2c-c

-a-4c

(-2b com -b daria -3b anula)

c)x²-x²-3x+5x+3x+7x+1-1-6

(anula o x² o - 3x com +3x e o -1com +1)

12x-6