A solução da equação é; a) -1, 4.
[tex]\boxed{\begin{array}{lr} x^2-2x=x+4\\x^2-2x-x-4\\\boxed{x^2-3x-4=0} \end{array}}[/tex]
A = 1
B = -3
C = -4
[tex]\boxed{\begin{array}{lr} \Delta=b^2-4.a.c\\\Delta=(-3)^2-4.1.-4\\\Delta=9+16\\\boxed{\Delta=25\ \ \checkmark} \end{array}}[/tex]
[tex]\boxed{\begin{array}{lr} x=\dfrac{3\pm5}{2} \end{array}}\\\\\sf \bf Resolvendo\\\\\\\boxed{\begin{array}{lr} x'=\dfrac{3+5}{2} \end{array}}\to\boxed{\begin{array}{lr} x'=\dfrac{8}{2} \end{array}}\to\boxed{\begin{array}{lr} \boxed{\begin{array}{lr} x'=4\ \ \checkmark \end{array}} \end{array}}\\\\\\\boxed{\begin{array}{lr}x''=\dfrac{3-5}{2} \end{array}}\to\boxed{\begin{array}{lr} x''=\dfrac{-2}{2}\end{array}}\to\boxed{\begin{array}{lr} \boxed{\begin{array}{lr} x''=-1\ \ \checkmark\end{array}}\end{array}}[/tex]
Resposta;
S = {4,-1}
Alternativa a).
Saiba Mais em;
brainly.com.br/tarefa/46882399
brainly.com.br/tarefa/46882236
brainly.com.br/tarefa/46881507
brainly.com.br/tarefa/46880947
brainly.com.br/tarefa/46880411
brainly.com.br/tarefa/46603563
[tex]|\underline{\overline{\mathcal{\boldsymbol{\LaTeX}}}}|\\\boxed{\begin{array}{lr} {\mathcal{\boldsymbol{\mathbbe\underline\mathcal{{|\overline{ATT:JL\ \ \ \heartsuit|}}}} \ \ \ \ \ \ \sf | \underline{\overline{ \Im\ \acute{ \eth } \ V\ \exists \ \sum\ \ \ \ \ \Gamma\ \in\ \Pi \ D \ \acute{\Delta } \ \pi \ \dot{\imath} \ \bigcirc } |\end{array}}}}}}[/tex]
