Question

ii) 3(x + y) - 9(x + y)2
iii) (3m - 7n) - n(3m - 7n)
iv) (2m - 5) (3a - 2b) - (2m - 5) (26 - 3a)
v) X(1 + y) + (7 + 7y)
vi) (6xy + 3x) + (2y + 1)
vii) x(y - z) - a(z-)
viii) z - 7 + 7 xy - x y z​

Answer 1

Step-by-step explanation:

1...

3(x+y)-9(x+y)2

3x+3y-(9x+9y)2

3x+3y-18x+18y

3x-18x+3y+18y

-15x+21y

3(-5x+7y)