Question

answer it fast

and answer it with process and send a pic or write the full answer and explain that how you did this

and try to answer my previous
questions also​

Answer 1

Answer:

hope it helps.. :) , i've underlined the steps which i've done first..(don't get confused) ;D...

Step-by-step explanation:

a).

9xy + 12xy + 10xy

= 31xy

b).

3x + 15 + 6x - 10

= 9x + 15 - 10

= 9x + 5

c).

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

= 4a + b - 3 + 2b - a +4 - b + 4

= 4a + b + 5 + 2b - a - b

= 4a + 5 + 2b - a

d).

10 + 14y - 15xy - 12  + 16 - 2x -8y + 9xy + 6xy

= 14 + 14y - 15xy -8y + 9xy + 6xy

= 14 +  14y + 0 + 8y

= 14 + 14y +8y

Q. 6)

a).

10x^2 -2x^2  

= 8x^2

b).

15xy - 4 - 7xy + 2  

= 8xy -4 -2

=8xy -2

c).

4x^2 - 2xy + 8 -x^2 + 6xy

= 3x^2 - 2xy + 8 + 6xy

= 3x^2 +4xy +  8

d).

8a^2 + 6b^2 - ab - 6ab - 6b^2 - 2a^2 =

= 8a^2 - ab - 6ab- 2a^2

= 6a^2 - ab - 6ab

= 6a^2 - 7ab