X^2=6-x
x^2+x-6=0
D=1+24=25
x1=(-1+5)/2=4/2=2
x2=(-1-5)/2=-6/2=-3
(-3;2)∫(x^2+x-6)dx = x^3/3 +x^2/2 -6x | (-3;2) = (2^3/3+2^2/2-6*2) - ( (-3)^3/3 +(-3)^2/2-
-6*(-3) )= 8/3+2-12+9-9/2-18 = 2,5 = 2 2/3 -19-4,5 = 2 2/3 -23 1/2 = 2 4/6 - 23 3/6 =
=20 5/6