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

Question

hba · Answer

Is it,

$$\huge\ (x-2)(x+2)=5^1$$

hba · Answer

@ma12209 ?

anonymous · Answer

x^2+2x-2x-4=5^1
x^2-4=5
x^2=5+4
x^2=9
x=3

i think hehe

hba · Answer

@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

anonymous · Answer

thanks :) everyone

hba · Answer

@miszery Is that understood ?

hba · Answer

@skullpatrol Not you dude :P

hba · Answer

@ma12209 

You should check this

$$\sqrt{9}=\pm3$$

anonymous · Answer

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

hba · Answer

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

anonymous · Answer

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

hba · Answer

@ma12209 

Well the point is that you should participate in the solution :)

Nothing else.

skullpatrol · Answer

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

anonymous · Answer

oh ok

anonymous · Answer

ok sorry and thanks

hba · Answer

Welcome :)

skullpatrol · Answer

Remember to try and get involved in the solution process.

jiteshmeghwal9 · Answer

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

jiteshmeghwal9 · Answer

now solve this for x :)