Решите уравнения (3x+1)^2-(x+0.1)(x-0.1)=8x^2-2.02 (3y-6)(4y-2)-(2y-9)(6y+5)-1=0 (7-3y)^2-(5y+1)(2y-5)+y^2=0

(3x+1)²-(x+0,1)(x-0,1)=8x²-2,02 9x²+6x+1-(x²-0,01)=8x²-2,02 9x²+6x+1-x²+0,01=8x²-2,02 8x²+6x+1,01=8x²-2,02 8x²+6x-8x²=-2,02-1,01 6x=-3,03 x=(-3,03):6 x=-0,505 (3y-6)(4y-2)-(2y-9)(6y+5)-1=0 12y²-6y-24y+12-(12y²+10y-54y-45)-1=0 12y²-30y+11-(12y²-44y-45)=0 12y²-30y+11-12y²+44y+45=0 14y+56=0 14y=-56 y=(-56):14 y=-4 (7-3y)²-(5y+1)(2y-5)+y²=0 49-42y+9y²-(10y²-25y+2y-5)+y²=0 49-42y+10y²-(10y²-23y-5)=0 49-42y+10y²-10y²+23y+5=0 -19y+54=0 -19y=-54 y=(-54):(-19) y=[latex]2 \frac{16}{19} [/latex]