Question

usando a fórmula de bhaskara
–x² + x + 12

Answer 1

Resposta: raízes: -3 e 4

Explicação passo-a-passo:

coeficientes: a=-1; b=1; c=12 >>> fórmula: x=-b+-$\sqrt{b^{2}-4ac }$/2a >>>>>>>>>>>>>>>>> x= -1+-$\sqrt{1^{2}-4.(-1).12 }$/-2 >>>> x=-1+-$\sqrt{49}$/-2 >>>>>>>>>>>>>> x'= (-1+7)/-2= -3 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> x"=(-1-7)/-2=4