MeLeVo
Im so tired what is square of (a+b+c) and
what is the shortcut of this



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ParthKohli
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\[(\color{blue}{a+b} + \color{#cc0000}c)^2 \]\[= \color{blue}{(a +b)^2} + 2\color{blue}{(a+b)}\color{#cc0000}{(c)} + \color{#cc0000}{c^2}\]

ParthKohli
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That's not too hard to simplify, eh?

MeLeVo
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ah

ParthKohli
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In the end, you should get\[a^2 + b^2 + c^2 + 2ab + 2bc + 2ca\]

MeLeVo
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thanks

UnkleRhaukus
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dw:1393759287051:dw

UnkleRhaukus
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dw:1393759336096:dw