Question

simplify (x - 2)(x + 2) = 5^1

Answer 1

Is it,

\[\huge\ (x-2)(x+2)=5^1\]

Answer 2

@ma12209 ?

Answer 3

x^2+2x-2x-4=5^1
x^2-4=5
x^2=5+4
x^2=9
x=3

i think hehe

Answer 4

@miszery

Giving direct answers is not allowed on OS.

Please let the asker participate.


If you are still not sure please check the CoC- http://openstudy.com/code-of-conduct

Answer 5

thanks :) everyone

Answer 6

@miszery Is that understood ?

Answer 7

@skullpatrol Not you dude :P

Answer 8

@ma12209

You should check this

\[\sqrt{9}=\pm3\]

Answer 9

sorry I don't understand I didn;t know the answer I was trying to figure it out

Answer 10

@miszery I hope you don't do the same think the next time.

Answer 11

sorry you guys for the problem i caused.....thanks for your help though ...i think its better if i just dont ask

Answer 12

@ma12209

Well the point is that you should participate in the solution :)

Nothing else.

Answer 13

"Ask" but don't demand the answer...

Answer 14

oh ok

Answer 15

ok sorry and thanks

Answer 16

Welcome :)

Answer 17

Remember to try and get involved in the solution process.

Answer 18

(x-2)(x+2)=5^1

Use the identity
\((a+b)(a-b)=a^2-b^2\)

x^2-4=5
x^2=5+4=9
take square root both sides

\(\sqrt{x^2}=\sqrt{9}\)

Answer 19

now solve this for x :)