Question

EXERCISE 12.2
Simplify combining like terms:
( 21b – 32 + 7b – 206
) – z2 + 13z2 – 5z + 773 - 15z
m) p-(p-) – 9-(q-p)
(w) 3a – 2b – ab - (a - b + ab) + 3ab + b - a
W 5x+y – 5x + 3yx – 3y2 + x2 - yl + 8xy? - 3y
(1) (3y2 + 5y – 4) – (8y - y2 – 4)​

Answer 1

Answer:

1 )21b- 32 +7b- 206

2) -z^2 +13z^2 -5z + 773 -15z

3) p - (-p) - 9-(q-p)

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

5) 5x - y -5x + 3xy - 3y^2 + x^2 -y + 8xy - 3y

6) (3y^2 +5y -4)-( 8y -y^2 -4)

Step-by-step explanation:

1) 21b +7b -32-206

28b - 238

2) 13z^2 -z^2 -5z -15z +773

12z^2 -20z +773

3) p -(-p) -9-(q-p )

p^2 + 9q - 9p

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

3a - 2b -ab -a +b +ab + 3ab +b -a

3a - a -a - 2b +b +b -ab +ab + 3ab

3a -2a -2b +2b +3ab

a - 3ab

5) 5x -5x +y -y - 3y +3xy +8xy -3y^2 +x^2

0 +0-3y + 12xy -3y^2 +x^2

-3y +12xy -3y^2 +x^2

6) solved in the paper