X-1=0
x=1
x²+4x+2=0
D=16-8=8
x=(-4-2√2)/2=-2-√2
x=-2+√2
_ + _ +
-------------(-2-√2)-----------(-2+√2)--------(1)-------------------
x∈(-∞;-2-√2) U (-2+√2;1)
P=n*m + k(m+4) + L(2+m+4)=n*m + k(m+4) + L(6+m)
-x^2 + 1,5x + 2,5 = 0
D = (1.5)^2 - 4 * 2.5 * (-1) = 2.25 + 10 = 12.25
x1 = (-1.5 - 3.5) 2*(-1) = 5/2 = 2.5
x2 = (-1.5+3.5) / 2*(-1) = 2/-2 = -1