Question

Q-1 SIMPLIFY:-
a. (2xy + 4y + 7Z²) - (3xy + 2y - 9Z²)
b. a² + 2ab + b² - 4ab and b² - a
c. (3x² - 4x + 5) + (7 - 2x) + (8 + 3x²)
e. (a² + b² - 4) + (4a + 3b + 6) + (4a² - 5b² + 8)
f. (a-b-c-d) - (d-a-b+2c)
g. (6p-8q-5r) - (8p+q-r)

Q-2 ADD:-
a. 15 x² -7 y² + 2xy and - 6xy + 8y - 9x²



PLEASE TELL ME FAST ​

Answer 1

Answer:

hope it helps

Step-by-step explanation:

mark me as brainliest please

Answer 2

(2xy + 4y + 7Z²) - (3xy + 2y - 9Z²)

2xy+4y+7z²-3xy-2y+9z²

=-xy+2y+16z²

(3x² - 4x + 5) + (7 - 2x) + (8 + 3x²)

3x²-4x+5+7-2x+8+3x²

=6x²-6x+20

(a² + b² - 4) + (4a + 3b + 6) + (4a² - 5b² + 8)

a²+b²-4+4a+3b+6+4a²-5b²+8

=5a²-4b²+10+3b

(a-b-c-d) - (d-a-b+2c)

a-b-c-d-d+a+b-2c

=2a-3c

(6p-8q-5r) - (8p+q-r)

6p-8q-5r-8p-q+r

=-2p-9q-4r

15 x² -7 y² + 2xy and - 6xy + 8y - 9x²

15 x² -7 y² + 2xy + (- 6xy + 8y - 9x²)

15 x² -7 y² + 2xy - 6xy +8y -9x²

=6x²-7y² -4xy +8y

Hope it helps, the part I missed I dont know how to solve it.