Question

escreva os polinômios abaixo na forma reduzida:
A) 7x^2- 5xy- (5x^2+ 3xy)+ x
B) 8ab- (4a- b)+ 7b- (5+ 2b+ 3ab)
C) cd+ 9c- 5d- (c^2+ 6cd)- 3d

Answer 1

A) 7x² - 5xy - (5x² + 3xy) + x =

7x² -5xy -5x² -3xy +x =

7x² -5x² -5xy -3xy +x =

2x² -8xy +x

B) 8ab- (4a- b)+ 7b- (5+ 2b+ 3ab)

8ab -4a +b +7b -5 -2b -3ab =

8ab -3ab -4a +b +7b -2b -5 =

5ab -4a +6b -5

C) cd+ 9c- 5d- (c^2+ 6cd)- 3d =

cd +9c -5c -c² -6cd -3d =

-c² +cd -6cd +9c -5c -3d =

-c² -5cd +4c -3d