Question

Essay question, I don't like these.

Answer 1

@Coolsector

Answer 2

well difference of two squares is given be a^2 - b^2 = (a-b)(a+b)
the sum of two square a^2 + b ^2 is not given by any compact formula
we can instead for example write (a+b)^2 - 2ab

Answer 3

So what do I do ?

Answer 4

Well the sum of two squares can be factored into complex conjugates,
a^2 + b^2 = (a+bi)(a-bi)

Have you learned about imaginary numbers in your class?
I don't wanna give you info if it doesn't make sense to you. :) heh