Wykonaj działania : -5x do 2 + 3x(x-1)+(2x-1)(x+3)  Uprość wyrażenie : (2y-3) do 2 -(3y-2)(3y+2) Rozwiąż równianie : (x-5)(x+5) = x do 2 -100x

-5x do 2 + 3x(x-1)+(2x-1)(x+3)=-5x²+3x²-3x+2x²+6x-x-3=2x-3   (2y-3) do 2 -(3y-2)(3y+2=4y²-12y+9-9y²+4=-5y²-12y+13   (x-5)(x+5) = x do 2 -100x x²-25=x²-100x -25=-100x x=¼

1) [latex]-5x^2+ 3x(x-1)+(2x-1)(x+3)=-5x^2+3x^2-3x+2x^2+6x-x-3=2x-3[/latex]   2) [latex](2y-3) ^2 -(3y-2)(3y+2)=4y^2-12y+9-(9y^2-4)=4y^2-12y+9-9y^2+4=-5y^2-12y+13[/latex]   3) [latex](x-5)(x+5) = x ^2 -100x [/latex] [latex]X^2-25=x^2-100x [/latex] [latex] x^2-x^2+100x=25 [/latex] [latex] 100x=25/100 [/latex] [latex]x=frac{25}{100}=frac{1}{4}[/latex]