Answers

2016-07-06T22:05:41+08:00
(2s+3)(s+4) =228
3s²+8s+3s+12 = 228
12s² = -12+228
12s² = 216
*divide both sides by 12*
s² = 18
√s² = √18
s = 3√2 or 4.24
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