Ответ:
x2+20x+100/x+5*10+2x/x+10=(x+10)2/x+5*2(x+5)/x+10= 2(x+10)= 2x+20= 2*0.7+20=1.4+20=21.4
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Ответ:
x2+20x+100/x+5*10+2x/x+10=(x+10)2/x+5*2(x+5)/x+10= 2(x+10)= 2x+20= 2*0.7+20=1.4+20=21.4