4х(а+х+у)+4а(а-х-у)- 4у(х-а-у) = 4ха+4х^2+4ху+4а^2-4ах-4ау-4ух+4уа+4у^2=4х^2+4а^2+4у^2
0,6143 >0,614
1,819<1,82
15/17 > 15/19
-23,47 > -23,6
3x^3 - 16x^2 + 8 = 0
3x^3 + 2x^2 - 18x^2 - 12x + 12x + 8 = 0
(3x + 2)(x^2 - 6x + 4) = 0
x1 = -2/3
D/4 = 3^2 - 4 = 9 - 4 = 5
x2 = 3 - √5
x3 = 3 + √5
X+1\x+4=2\x+4
(х+1)(х+4)=2(х+4)
x+1=2
x=2-1
x=1
2\5=2\5