Odpowiedź :
Odpowiedź:
[tex]4( {x}^{2} + x) - 3(x - 2) = 4x(x + 1) + 3x + 12 \\ 4 {x}^{2} + 4x - 3x + 6 = 4 {x}^{2} + 4x + 3x + 12 \\ 4 {x}^{2} + 4x - 3x - 4 {x}^{2} - 4x - 3x = 12 - 6 \\ - 6x = 6 \: \: | \div ( - 6) \\ x = - 1[/tex]
Odpowiedź:
[tex]4(x^2+x)-3(x-2)=4x(x+1)+3x+12\\\\4x^2+4x-3x+6=4x^2+4x+3x+12\\\\4x^2+x+6=4x^2+7x+12\\\\4x^2+x-4x^2-7x=12-6\\\\-6x=6\ \ /:(-6)\\\\x=-1[/tex]