(x^2 - 2x)^2 + ( x-1)^2=1
x^4-4x^3-4x^2-x^2+2x-1-1=0
x(x^3-4x^2-4x-x+2)=2
x1=2
x^3-4x^2-4x-x+2=2
x(x^2-4x-4-1)=2-2
x2=0
x^2-4x-4-1=0
x^2-4x-5=0
D=16+20=36
X3=(4+КОРЕНЬ ИЗ 36)/2 = 5
X4 =(4-КОРЕНЬ ИЗ 36)/2 = -1
Ответ: X1=2; X2 =0; X3=5; X4=-1
1) (2a+3b)^3= 8a^3+3*(4a^2*3b)+3*(2a*9b^2)+27b^3=8a^3+36a^2*b+64ab^2+27b^3;
2) (2y+5)^3= 8y^3+3*(4y^2*5)+3*(2y*25)+125= 8y^3+60y^2+150y+125;
3) (3m-4n)^3= 27m^3-3*(9m^2*4n)+3*(3m*16n^2)-64n^3= 27m^3-108m^2*n+144mn^2-64n^3.
= 4/13 * 6,5n - 4/13 * 13/4 m + 3,2 * 5/8 n - 3,2 * 0,5m = 2n-m+2n-1,6m = 4n-2,6m
1. (3x²-6x-5)-(2x²-3x-4)=3x²-6x-5-2x²+3x+4=
=x²-3х-1
2. 5x(x³-4x+6)=5х^4-20х^2+30х (^степень)