Question

Simplify and subtract:
a) 5ab (a-b) from 3ab (a+b)
b) 4x (x+y+z) – 2y(x-y+z) from 4z (-x+y+z)​

Answer 1

Answer:

a) - 2 + 8ab^2

Step-by-step explanation:

a) Expand the brackets

5ab (a - b) = 5a^2b - 5ab^2

3ab (a + b) = 3a^2b + 3ab^2

3a^2b + 3ab^2

5a^2b - 5ab^2

 - 2 + 8ab^2