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(S)=-4.9(2)^2+19.6(2)+58.8
We move all terms to the left:
(S)-(-4.9(2)^2+19.6(2)+58.8)=0
We add all the numbers together, and all the variables
S-54.2136=0
We move all terms containing S to the left, all other terms to the right
S=54.2136
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