(8a-7b)-(4a-5b)

-(3x-2y + z)-[5x-(x-2y +z ) -3x]

2(7x2+5x-3)-3(5x2-3x+2)

2b3 +(3ab3-a2b)-2(ab2 + b3)

(-6x2+5xy)- 12xy-(2x2-9xy)

(x2-2x3+1)-(-1+2x3+2x2), where x=2.

3a-[-2b+(4a-3b)], where a =- 1 and b=3.

3ab-4ab+8ab-7ab+ab=

7x-(5x-5y)-y=

23 a3 BC 2- 15 ab2c+8 ABC-24 a3 BC 2-8 ABC =

-7x2+6x+ 13x2-4x-5x2=

2y+(-2y+5)-(3y+2)= 1

(2 x2-3xy+4 y2)+(x2+2xy-3 y2)= 1

2a-(3a-2 b+2)+(3a-4 b- 1)= 1

-6x2-7x2+ 15x2-2x2=

2x-(x+3y)-(-x-y)-(x-y)= 1

2x+2y-[3x-2(x-y)]=

5-( 1-x)- 1-(x- 1)= 0

Given A=x3-2x2+x-4 and B=2x3-5x+3, calculate A+B=

If a=-0.2 and b=0.5, the value of the algebraic expression -(|a2b|-|ab2|) is

-(2x2-y2)-[2y2-(x2+2xy)]=

(-y+6+3 y4-y3)-(2 y2-3 y3+y4-7)= 1

4x2-[7x2-5x-3( 1-2x+x2)]=

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

x-[y-2x-(x+y)] =

3x-[y-(2x+y)]=

4a2n-an-(3an-2a2n)= 1

2x2y+3xy2-x2+2xy=

-5xm-XM-(-7xm)+(-3xm)= 1

When a=- 1 and b=-2,

[a-(b-c)]-[-b-(-c-a)]=

When a=- 1, b= 1 and c=- 1,

-[B- 2(-5a)]-(-3 b+ 5c)= 1

-2(3x+z)-(-6x)+(-5y+3z)= 1

-5an-an+ 1-(-7an+ 1)+(-3an)= 0

3a-(2a-4 b-6c)+3(-2c+2b)= 1

9a2+[7a2-2a-(-a2+3a)]=

When 2y-x=5, 5(x-2y)2-3(-x+2y)- 100=