Question

In Algebra you learned that Difference of Perfect Squares is x^2 - 25 = (x+5)(x-5)

Is there a way to factor the sum of perfect squares? ex: x^2 + 25 = (?)(?)

Answer 1

(x+5i)(x-5i)

Explanation:

We use imaginary numbers to solve that. since i = sqare root of -1 so i * i = -1.