Question

Q.) Simplify.

1.) 5xy + 7mn - 3xy - 10mn =

2.) 8 + 2ab - 12 - 9ab =

3.) 4a3 + 3a2 + 9a - a3 - 5a2 – 12a =

4.) 3(c + 2d) + 2(c – 3d) = .

5.) 4x + 5(x + 2y) - 7y =

Answer 1

Answer:

1.2xy-3mn

2.-4-7ab

5.9x+3y

Answer 2

Answer:

1.)2xy-3mn ans.

2)-4-7ab ans.

3)3a3-2a2-3a ans.

4) 5c ans.

5)9x +3y ans.

Step-by-step explanation:

4)3(c+2d)+2(c-3d)=

3c+6d+2c-6d=5c

5.)4x +5(x+2y)-7y=

4x +5x+10y-7y= 9x + 3y