Answer:
Explanation:
(a-b)·z+3(b^2-a^2)
z(a-b)+3b^2-3a^2
z(a-b)+3ab(b-a)
z(a-b)-3ab(a-b)
(z-3ab)(a-b)
(a-b)-z+3(b-a)²
(a-b)-z+3(b²-a²)
a-b-z+3b²-a²
a-a²+3b²-b-z
(a-a²)+(3b²-b)-z
a(1-a)+b(3b-1)-z
9.4m questions
12.2m answers