Question

Perform the indicated operations and simplify.

[x + (7 + x2)][x − (7 + x2)]

Answer 1

Use (A - B)(A + B) = A^2 - B^2

Answer 2

Here A = x and B = (......)

Answer 3

(7+x^2)

Answer 4

\[x^2-49+14x^2+x^4\] .... is this correct?

Answer 5

wait it should be 15x^2 right?

Answer 6

Almost but no

Answer 7

15 is dead wrong

Answer 8

Simply open the brackets with minus sign more methoducally - u need more minuses

Answer 9

\[x^2-49-14x^2-x^4\]

Answer 10

Yes

Answer 11

Buuuut it is NOT the end (nothing is, but that's mystics) of computation as required by the question

Answer 12

Thanks for the help Mikael. I have some other concepts I'm still brushing up on if you're willing to help correct those as well. I understand if you can't; either way thanks for helping out.

Answer 13

Yea I will gladly help but same time TOMORROW (it can be 20 minutes just for ur questions)

Answer 14

Anyway - here GATHER the SIMILAR TERMS - this is called "simplify"

Answer 15

Aaaand don't forget to "fan" me

Answer 16

So you were saying this can be simplified even further?

Answer 17

Yep that's correct

Answer 18

alright I think I found it through factoring

Answer 19

Gather Like terms (this should be said in a "voice from heavens" reverberating echo low bass pitch :))) )

Answer 20

\[(x-7)(x+7)-x^2(14-x^2)\]

Answer 21

No No No - this is ANTI-SIMPLIFYING !!!

Answer 22

It is smart and inventive but they want a veryy dumm GATHER the LIKE-TERMS ...

Answer 23

-49-15x^2-4x

Answer 24

\[x^2 - 14x^2 = -13x^2\]

Answer 25

incorrect

Answer 26

\[-x^4 -13x^2 - 49\]

Answer 27

This IS the answer. God Bless and good Bye