Equation that melted my brain... (one for all the nerds out there)

[squidlips]

I was doing some math stuff and came across this...

(x2+x1/2)2

How on earth do you expand it?

p.s. the 2 and 1/2 are exponents.

[bvgroote]

Binomial Berty?

[squidlips]

huh?

You can expand it to... x4+x, but sub in some numbers and it dosnt work.

[bvgroote]

by 1/2 do you mean 0.5 or 1 divided by 2?

[squidlips]

by 1/2 i mean x to the power of 1/2, which is effectively the square root of x.

[Metal Fusion]

hey squidlips,
can u type out equation again? Use ^'s for exponents, cause it looked abit confusing. Don't knwo which one is the exponent.



Metal Fusion

[squidlips]

(x^2+x^1/2)2...

... in words...

x squared plus x to the power of half, all squared

[Metal Fusion]

i think that would give you
2x^2 + 2x^1/2

[Ihoss]

no, if the whole thing is squared it would mean:
(x^2+x^1/2)*(x^2+x^1/2)

x^2*x^2+x^2*x^1/2+x^1/2*x^2+x^1/2*x^1/2

x^4+x^5/2+x^5/2+x

x^4+2x^5/2+x

[bvgroote]

Originally posted by Ihoss
no, if the whole thing is squared it would mean:
(x^2+x^1/2)*(x^2+x^1/2)

x^2*x^2+x^2*x^1/2+x^1/2*x^2+x^1/2*x^1/2

x^4+x^5/2+x^5/2+x

x^4+2x^5/2+x

Like I said, binomial berty

[Ihoss]

but i got it right. HA!