Question

find the product (-5+3i)(-5-3i)
(simplify and write in form a+bi)

Answer 1

Answer:

$\huge\boxed{(-5+3i)(-5-3i)=34=34+0i}$

Step-by-step explanation:

$(-5+3i)(-5-3i)$

use (a + b)(a - b) = a² - b²

$=(-5)^2-(3i)^2=25-3^2i^2=25-9i^2$

we know i² = -1. Therefore

$=25-9(-1)=25+9=34$