Решение
<span>15x^2-11x+2
</span>D = 121 - 4*15*2 = 1
x₁ = (11 - 1)/30
x₁ = 1/3
x₂ = (11 + 1)/30
x₂ = 12/30
x₂ = 2/5
<span>15x^2-11x+2 = 15*(x - 1/3)(x - 2/5)</span>
(х-6)²+(х+8)²=2х²
х²-12х+36+х²+16х+64=2х²
2х²+4х+100=2х²
4х=-100
х= - 25
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(Z-5)(11z+1)(3z-11)=(11z^2-55z+z-5)(3z-11)=33z^3-162z^2-15z-121