Question

Can anyone please help me with this?

Algebra 2 question


Factor the expression over the complex numbers.

x^2+18

Answer 1

Using difference of squares

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

with a = x and b = 3
`√(2)`i

`x^(2)` + 18 =(x-3
`√(2)` i)(x+3
`√(2)` i)