Question

Is anyone here good at Math?

Answer 1

12th

Answer 2

Okie dokie http://prntscr.com/kzvned

Answer 3

Let's try x2 - 25 first.

x2 - 25 = x2 - 52 = (x - 5)(x + 5)

I know this because if you multiply (x - 5) by (x + 5) and simplify you get x2 - 25. This means that for any number x, x2 - 25 = (x - 5)(x + 5). For example if x = 12 then

122 - 52 = 144 - 25 = 119 = (12 - 5)(12 + 5) = 7 × 17.

Now what about x2 + 25? If x = 2 for example then x2 + 25 = 4 + 25 = 29 which is a prime number. Thus the only factors of 29 are 29 and 1 and hence the only factorization of 29 is 29 × 1. Similarly if x = 4 then x2 + 25 = 41 which is again prime. Hence the only factorization of x2 + 25 which is valid for every number x is

x2 + 25 = (x2 + 25) × 1

Answer 4

@Shadow am i on track or ^^

Answer 5

Which part is the exponents?

Answer 6

ima wait till shadow come view this to verify that im on track okay 1sec

Answer 7

Okie dokie

Answer 8

@Shadow they need ya help

Answer 9

Thanks @KittyGirl

Answer 10

once he verify what i already put and says im on track ill continue

Answer 11

np

Answer 12

Okie dokie

Answer 13

I want to say you're right, and I think you are

Answer 14

ik but i wanna make sure and he will be here he is on another question rn

Answer 15

Very well :D

Answer 16

wait u already answered it ?

Answer 17

I have it in, but I didn't submit it yet

Answer 18

@Shadow ??!

Answer 19

XD

Answer 20

@Vocaloid

Answer 21

@Vocaloid i need u to verify that my explanation is correct ?

Answer 22

Since it's a complex number. I think you should include 'i'.

\[x^2+25 = x^2-25i^2 = (x-5i)(x+5i)\]

Answer 23

im not gonna trust that ill wait...

Answer 24

"I don't know what to believe anymore!!" XD

Answer 25

tag shadow !

Answer 26

@Shadow

Answer 27

i dont think he/she is correct

Answer 28

And he's gone

Answer 29

@SmokeyBrown Am i correct n the explanation i gave ?^^^^

Answer 30

So what Cupcake said is correct, but that wouldn't be the answer to the question. We are being asked to factor using complex numbers. In other words, combinations of "real numbers" and "imaginary numbers", i.
I think mhchen has the right idea. Keep in mind that i^2 = -1, and it should make sense.

Answer 31

So what does her answer lead to? As in the answer?

Answer 32

Oh, the answer would be
(x+5i) * (x-5i)
When you multiply those complex numbers together, you'd get
x^2 + 25 as the result.

Answer 33

Thanks bro

Answer 34

No prob bro

Answer 35

ahh i knew it lol i just needed to know was i on track