Question

I need urgent help with this

Answer 1

f(x) = (x+6i) (x-6i)

(a+b)(a-b) = a²-b²

= x² - 6i² -------> i² = -1

= x² -36(-1)

= x² + 36

option C

Answer 2

Answer:

B OPTION IS CORRECT BY THE IDENTITY OF x^2-y^2=(a+b)(a-b)

x^2-36i^2=(x+6i)(x-6i)