Question

me ajudem com a equação -2x (x-5)-3 (2x+7)=10-x

Answer 1

-2x(x-5)-3 (2x+7)=10-x -2x^2+10x -6x -21 = 10 - x -2x^2 +10x -6x + x - 21 - 10 = 0 -2x^2 + 5x - 31 = 0 Bhaskara X= (-5 +- raiz 25 -4.(-2).(-31))/2.(-2) X = (-5+-raiz -223)/-4 Portanto x1 = (-5 + raiz -223)/-4 x2 = (-5 - raiz -223)/-4