(0.3t+1.4s)^2=0.09t^2+2*0.3t*1.4s+1.96s^2=0.09t^2+0.84ts+1.96s^2
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(0.3t+1.4s)^2=0.09t^2+2*0.3t*1.4s+1.96s^2=0.09t^2+0.84ts+1.96s^2
Все