Bună seara


x²+6x=16
x²-2x=8
4x²-4x=8
4x²+12x=16
x²-8x=-7
x²+4x=12
[tex] {x}^{2} - 6x = 7 \\ {x}^{2} - 4x = 32 \\ {x}^{2} - 12x = 28.[/tex]