Algebra
posted by Tavia .
Can you help with the following equation?
x2
x2

x(2)2x
2x+4

x(2)4x+4

That is not an equation. It is a multiplication. It is correct as you wrote it, although usually written differently.
Here is one common way:
(x2)(x2) = x(x2) 2(x2)
= x^2  2x  2x + 4
= x^2 4 x + 4