Question

for all real numbers A and B, if A @ B = a(a-b), then A @ (A@B) =

Answer 1

my answer say it wrong i put a^3-a^2b but it say wrong. can help me?

Answer 2

a @ (a @ b) = a(a - (a @ b) )
= a(a - a(a-b))

Answer 3

which equals -a^3 + a^2b + a^2

Answer 4

why is a(a-(a-b)?
why not a(a(a-b)) ??

Answer 5

A = a
B = (a-b) ?

Answer 6

let c = a@b, then what does a@c equal according to the definition of @?

Answer 7

a(a-b) ?

Answer 8

a@c = a(a - c)

Answer 9

ooh! ok salamat

Answer 10

but c = a@b, so c = a(a-b). Substitute and you'll see