Question

ayuda, doy co4ona a la mejor respuesta
3
a + 3b +5(a - b) + b =
- (5x-2)+3(a-x) =
5
-3(x + 2) + (x - 2) +8 =
6
5(x²+1) - (x² - 1) =
7
-(r- 10) - (x - 8) + x + 10 =
​

Answer 1

Respuesta:

a + 3b +5(a - b) + b = - (5x-2)+3(a-x) =

= a + 3b +5a - 5b + b = - 5x + 2 + 3a -3x

= a + 3b +5a - 5b + b  + 5x - 2 - 3a + 3x

= a - 3a +5a + 5x + 3x + 3b  - 5b + b   - 2  

= 3b + 8x - b -2

- (5x-2)+3(a-x) =

= - 5x+2 +3a + 3b  - 5b + b   - 2  

=  - 5x +3 a + 3b  - 5b + b -2 + 2

=   - 5x + 3a - b

5(x²+1) - (x² - 1) =

= 5x² + 5 - x² + 1

= 4x² + 6

-(r- 10) - (x - 8) + x + 10 =

= -r + 10 - x + 8 + x + 10

= - r + 28