Question

Asking for someone to check the answer.
Multiply (x^5+y^4)(x^5-x^4)

Answer 1

I got x^10-x+y^4x^5+y$x^4

Answer 2

@HawkCrimson

Answer 3

use the difference squares formula :
(a+b)(a-b) = a^2 - b^2

Answer 4

then it would be x^5-x^4y^4

Answer 5

i think you had a typo
is it
\[(x^5+y^4)(x^5-y^4)\]??

Answer 6

yes

Answer 7

Difference of squares

Answer 8

okay, do you just therefore is it x^5-x^4y^4

Answer 9

not exactly

Answer 10

okay, how do you solve it then?

Answer 11

Just to confirm, are you sure that what @satellite73 posted is correct?

Answer 12

yes, its suppose to be (x^5+y^4)(x^5-y^4)

Answer 13

What he posted is different from what you posted originally.

Answer 14

Okay, so use difference of squares formula to solve.

Answer 15

my apology it was a typo. okay but I am not understanding do you multiply, add,subtract to what?

Answer 16

???

Answer 17

(x^5+y^4)(x^5-x^4) we expand it normally using FOIL

Answer 18

okay do you add the exponents for x^5*x^5 would it be ^10th or ^25th

Answer 19

x^10

Answer 20

okay so then with everything foiled out would it be
x^10-x^5y^4+y^4x^5+y^8?

Answer 21

it's (x^5+y^4)(x^5-x^4) not (x^5+y^4)(x^5-y^4) :) that's ur mistake

Answer 22

unless u made a typo in ur question

Answer 23

I made a typo..

Answer 24

She made a typo in her question. Which we already discussed and cleared up. Maybe you should read the entire convo @HawkCrimson before commenting.

Answer 25

it's suppose to be with the second equation of (x^5-y^4)

Answer 26

I asked for his help, so with everything foiled out do it turn out to be x^10-x^5y^4+y^4x^5+y^8?

Answer 27

-y^8

Answer 28

@PECKCE, I know you asked for his help. I didn't stop him from helping you. I was just letting him know that we had already addressed the typo.

Answer 29

and hero maybe u should shove it before commenting

Answer 30

-_-

Answer 31

Okay back to the question, I really just need the help on my final.

Answer 32

@HawkCrimson, don't turn this into an argument. Nobody is against you.

Answer 33

okay with the difference of squares formula you have to foil out the equation can someone just tell me if what I stated prior is correct or not, if not can someone help me figure it out

Answer 34

x^10-x^5y^4+y^4x^5-y^8 the - y^8 was ur only mistake :)

Answer 35

ok sry @Hero

Answer 36

x^10-x^5y^4+y^4x^5-y^8
x^10 - y^8 is ur answer

Answer 37

okay thank you.