25x³-10x²+x=0
x(25x²-10x+1)=0
x=0 или 25x²-10x+1=0
D=(-10)² - 4*25*1=100-100=0
x=-(-10)/2*25=10/50=1/5=0,2
1 км 67 м = 1067 м
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1)44,89-25,7=19,9
2)100,02*19,9*12,06=24004,19988
3)500,7-24004,19988=-23503,49988
1) x-16<span><0
x</span><span><16
2) 28x+4</span><span>>0
28x</span><span>>-4
x</span><span>>-1/7
3) 31x+63</span><span>>36x+23
31x-36x</span><span>>23-63
-5x</span><span>>-40
x</span><span>>8</span>