-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7
вроде так
<span>(х²-2х+3)=-х²+2х+8
</span><span>х²-2х+x</span>²-2x=5
2x²-4x=5
x(2x-4)=5
x=5
или 2x-4=5
2x=1
x=0.5
1)5t^2-4t=0
t (5t-4)=0
t=0, 5t=4
t=4/5
2)(5x-2)(2x+1)=10x^2-3x+10
10x^2+5x-4x-2-10x^2+3x-10=0
4x-12=0
4x=12
x=3