Question

1.(2x+8) + ( 4x - 5 - 5y)=
2.(3p +q ) +( -2p - 5q + 7)=
3. (2x + 5 ) - ( x - 3 )=
4.(x^2 +4x - 1) - ( 2x^2 + 4x)=
5.(3x^2 - 1) + (x^2 - 5x + 6)=
6.2(x + 2y - xy) + 5 ( 2x - 3y + 5xy)=
7.(y^2 - 3) - (4y^2 + 5y + 6)=
8. (5a - 6 + ab ) - (a + 2ab - 1)=
tolong bantuannya

Answer 1

1.(2x+8) + ( 4x - 5 - 5y)= 2x + 8 + 4x - 5 - 5y
= 6x -5y + 3

2.(3p +q ) +( -2p - 5q + 7)
3p + q - 2p - 5q + 7
= p - 4q + 7

3. (2x + 5 ) - ( x - 3 )
= 2x + 5 -x +3
= x + 8

4.(x^2 +4x - 1) - ( 2x^2 + 4x)
=x² + 4x - 1 - 2x² - 4x
= -x²-1

5.(3x^2 - 1) + (x^2 - 5x + 6)
= 3x² - 1 + x² - 5x + 6
= 4x² - 5x + 5

6.2(x + 2y - xy) + 5 ( 2x - 3y + 5xy)
= 2x + 4y - 2xy + 10x - 15y + 25 xy
= 12x - 11 y + 23 xy

7.(y^2 - 3) - (4y^2 + 5y + 6)
= y² - 3 - 4y² -5y - 6
= -3y² - 5y - 9

8. (5a - 6 + ab ) - (a + 2ab - 1)
= 5a - 6 + ab - a - 2ab + 1
= -ab - 4a - 5

Answer 2

  1.
( 2x + 8 ) + ( 4x - 5 - 5y )
2x + 8 + 4x - 5 - 5y
6x - 5y + 3
2.
( 3p + q ) + ( - 2p - 5q + 7 )
3p + q - 2p - 5q + 7
p - 4q + 7
3.
( 2x + 5 ) - ( x - 3 )
2x + 5 - x + 3
x + 8
4.
( x² + 4x - 1 ) - ( 2x² + 4x )
x² + 4x -1 - 2x² - 4x
- x² - 1
x² + 1
5.
(3x² - 1) + (x² - 5x + 6)
3x² - 1 + x² - 5x + 6
4x² - 5x + 5
6.
2 ( x + 2y - xy ) + 5 ( 2x - 3y + 5xy )
2x + 4y - 2xy + 10x - 15y + 25xy
12x + 23xy - 11y
7.
( y² - 3 ) - ( 4y² + 5y + 6 )
y² - 3 - 4y² - 5y - 6
- 3y² - 5y - 9
3y² + 5y + 9
8.
( 5a - 6 + ab ) - ( a + 2ab - 1 )
5a - 6 + ab - a - 2ab + 1
4a - ab - 5