"""""""""""""""""""""""""""""""""""""""""""""""""""""
=7-18y+12=-18y+19
-18y=-19
y=19/18
1) 10x^2-14x=2x^2-5
8x^2-14x+5=0
D/4=7^2-5*8=9
x=1/8(7+-sqrt(D))=1/8*(7+-3)
x1=1/2 x2=10/8=5/4=1,25
2) x^2+16+8x=4x^2+5
3x^2-8x-11=0
x=1/3(4+-sqrt(16+33))=1/3(4+-7)
x1=-1 x2=11/3
3) x^2-10x+25=3x^2-x+14
2x^2+9x-11=0
x=1/4(-9+-sqrt(81+88))=1/4(-9+-13)
x1=1 x2=-11/2
4)36x^2-9x=3x-1
36x^2-12x+1=
(6x-1)^2=0
x=1/6