Question

2) Calcule:
a) (3d +2x) + (-8d - 4x) =
b) (6x-2y +7z) - (-2x +4y - 62) =
c) (3a - 6ax + 8x) - (5x² + 5x -3)=
d) ( 2n + 3a -5i ) + (-6n + 8a - 9i)=
e) (-3x² +4x-2) - (5x²+5x-3)=​

Answer 1

Explicação passo-a-passo:

a) 3d +2x - 8d -4x=

3d - 8d +2x -4x=

-5d -2x

b) 6x -2y +7z +2x -4y +62=

6x +2x -2y -4y +7z +62=

8x - 6y +7z +62

c) 3a -6ax +8x -5x² -5x +3=

3a -6ax +8x -5x -5x²+3=

3a -6ax + 3x -5x² +3

d) 2n +3a -5i - 6n +8a - 9i=

2n -6n +3a +8a -5i -9i=

- 4n + 11a - 14i

e) - 3x² +4x - 2 - 5x² - 5x +3=

- 3x² -5x² +4x -5x -2 +3=

- 8x² - x + 1