Question

Factor x^2 + 100

Answer 1

use this :

a^2 + b^2 = (a+ib)(a-ib)

Answer 2

I tried to factor it to (x+10)(x-10) but that doesn't give me x^2+100. It gives me x^2-100.
I don't believe this can even be factored.

Answer 3

i

Answer 4

try this :

i^2 = -1

x^2 + 100

x^2 - (i . 10)^2

(x+i10)(x-i10)