precal
Solve for x
S=2x^2+4xh



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inkyvoyd
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Treat S and h as constants.

inkyvoyd
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Move S over to the other side. Then,
2x^2+(4h)xS=0
Now use the quadratic equation, setting a=2, 4h=b, and c=S

precal
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oh I see it now, I saw a and b but did not think about S

inkyvoyd
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Yeah :S

precal
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dw:1348777428990:dwthis is the book solution

precal
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just if you were wondering... Thanks again