400-у²=(20-y)(20+y);
-0,25х²+у²z²=(yz-0,5x)(yz+0,5x;
(х+1)²-4=(x+3)(x-1)
х²-(х+3)(х-3)=3х;
x^2-x^2+9=3x
9=3x
x=3
4х²-9=0
x^2=9/4
x=+-3/2
27х³-у³=(3x-y)(9x^2+y^2+3xy);
у³+64=(y+4)(y^2+16-4y)
400-y^2=(20-y)(20+y)
-0,25х²+у²z²=-(0.5x-yz)(0.5+yz)
(х+1)²-4=((x+1)-2)((x+1)+2)
x^2-(x+3)(x-3)=3x
4x^2-9=0
4x^2=9
x^2=4/9
x=2/3
27x^3-y^3=(3x-y)(9x^2+3xy+y^2)
y^3+64=(y+4)(y^2-4y+16)
400-у²=(20-y)(20+y);
-0,25х²+у²z²=(yz-0,5x)(yz+0,5x;
(х+1)²-4=(x+3)(x-1)
х²-(х+3)(х-3)=3х;
x^2-x^2+9=3x
9=3x
x=3
4х²-9=0
x^2=9/4
x=+-3/2
27х³-у³=(3x-y)(9x^2+y^2+3xy);
у³+64=(y+4)(y^2+16-4y)
400-y^2=(20-y)(20+y)
-0,25х²+у²z²=-(0.5x-yz)(0.5+yz)
(х+1)²-4=((x+1)-2)((x+1)+2)
x^2-(x+3)(x-3)=3x
x^2-x^2+9=3x
x=3
4x^2-9=0
4x^2=9
x^2=4/9
x=2/3
27x^3-y^3=(3x-y)(9x^2+3xy+y^2)
y^3+64=(y+4)(y^2-4y+16)