Решите уравнения: 1)2x(x-5)²-x²(x-5) = 0 x1=? x2=? x3=? 2) z²+17z+52=0 z1=? z2=?

Z1=-26
z2=-8
Дискрименант = 81
Z1/Z2 = -17+-✓81/2=-26
Z1/Z2= -17 -+✓81/2=-8

1) 2x(x-5)²-x²(x-5) = 0
(х-5)(2х (х-5)-х²) = 0
(х-5)(2х²-10х-х²) = 0
(х-5)(х²-10х)=0
(х-5)(х-10)х = 0
х₁ = 0
х₂ = 5
х₃ = 10
2) z²+17z+52=0
z²+17z = - 52
z(z+17) = - 52
z₁ = - 4