x² + (p² + p - 6)x - p = 0
x₁ + x₂ = - (p² + p - 6)
- (p² + p - 6) = 0
p² + p - 6 = 0
p₁ = - 3 p₂ = 2
Ответ : при p = - 3 и p = 2
<span> (2х+1)²-(2х+3)(2х-3)=0
4х²+4х+1-4х²+9=0
4х=-10
х=-2,5
</span>
36x²-1-36x²-18x=2
-18x=2+1=3
x=3:(-18)=-1/6
4х²+9х-9=0
D=81+4*4*9=225
х₁=(-9+15)/8=6/8=3/4
х₂=(-9-15)/8==-3