x^{2} +2x≥0
x(x+2)≥0
x≥0 x≥-2
(-R;-2)(0:R)
6p^2 + 24pq + 24q^2 = (6p + 12q)*(p + 2q)
А) =а^2+а-5а-5-(а^2-а-6а+6)=а^2+а-5а-5-а^2+а+6а-6=3а-1
Б)=а^2-16-6а+2а^2=3а^2-6а-16
В)=р^2-11р+3р-33+р^2+12р+36=2р^2+4р+3
=16х^2-8ху+у^2-16х^2-8ху-у^2=-16ху; =>
-16*1*(-0.2)=3.2
х^2 - 15 =2x
x^2 - 2x - 15 = 0
D = ( - 2)^2 - 4*1*( - 15) = 4 + 60 = 64
x1 = 5
<span>x2 = -3</span>