Complete the following exercises by applying polynomial identities to complex numbers.

1. Factor x2 + 64. Check your work.
2. Factor 16x2 + 49. Check your work.
3. Find the product of (x + 9i)2.
4. Find the product of (x − 2i)2.
Find the product of (x + (3+5i))2.

Question

Complete the following exercises by applying polynomial identities to complex numbers.

1. Factor x2 + 64. Check your work.
2. Factor 16x2 + 49. Check your work.
3. Find the product of (x + 9i)2.
4. Find the product of (x − 2i)2.
Find the product of (x + (3+5i))2.

ebayminer126 · Answer

Okay what do you think it is for number one? @destinykiara99

destinykiara99 · Answer

@ebayminer126 
(x+8i)(x-8i) ?

ebayminer126 · Answer

Yes!

ebayminer126 · Answer

@destinykiara99 What do you think 2. is?

destinykiara99 · Answer

@ebayminer126
(4x-7)(4x+7)

destinykiara99 · Answer

also, thank you for helping me and checking my answers.

ebayminer126 · Answer

I think this may help you some. http://www.virtualnerd.com/algebra-1/polynomials-and-factoring

jim_thompson5910 · Answer

`(4x-7)(4x+7)` is not correct for #2 @destinykiara99

jim_thompson5910 · Answer

it will involve complex numbers like #1 does