<span>5x^2-3х-2 / 5х^2+2х =</span>
<span>= (x-1)(5x+2) / x (5x+2) = (x-1) /x или 1 - 1/x</span>
<span>5x^2-3х-2 =0</span>
<span>D =9 +40=49</span>
<span>x1=1/10 (3-7) = -4/10 = -2/5</span>
<span>x2=1/10 (3+7) = 1</span>
<span>(x-1)(x+2/5) = 0</span>
<span>(x-1)(5x+2) = 0</span>