Shoutbox

I'm studying for a test i have in a few hours and I have come across something I apparently don't remember going over.

the problem is:

2x^2-3=0

quote:

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Originally posted by atown44
2x^2-3=0

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2x^2=3
x^2=1.5
x = squareroot[1.5]

checking it:
x =1.22474487
2*1.22474487^2 =3

Remember x can be -squareroot[1.5] too.

quote:

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Originally posted by Mnjul
Remember x can be -squareroot[1.5] too.

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aah i knew i forgot something