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  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#1 2014-01-26 10:14:55

bronxsystem
Member
Registered: 2013-06-22
Posts: 63

basic equation help super easy

hey all i dont know what im missing here ):

i thought we first square everything

then subtract 2

then divide by 4

but i get wrong answer. what did i do wrong ><

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#2 2014-01-26 10:31:50

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,727

Re: basic equation help super easy

Hi;

The mistake is in your second step

It should be


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

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#3 2014-01-26 10:38:43

bronxsystem
Member
Registered: 2013-06-22
Posts: 63

Re: basic equation help super easy

thank you makes sense i was completely stuck

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#4 2014-01-26 10:46:43

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,727

Re: basic equation help super easy

Hi;

Okay, if you need help post back.


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

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