Resposta:
ITEM (A)
Explicação passo-a-passo:
[tex]\blue {{ _{\heartsuit} } \heartsuit_{\heartsuit} } \: \: \mathsf {OI, TUDO \: \: J\acute{O}IA \: ? \: \:\blue {{ _{\heartsuit} } \heartsuit_{\heartsuit} } }[/tex]
[tex] \sf{ {x}^{2} - 36 = 0 } \\ \sf{ {x}^{2} = 36} \\ \sf{x = \pm \sqrt{36} } \\ \sf{x = \pm6} \\ \sf{ x_{1} = 6 } \\ \sf{ x_{2} = - 6} \\ \\ \sf{( + 6) + ( - 6)} \\ \sf{ + 6 - 6} \\ \boxed{\red{ \sf{0}}}[/tex]
[tex]\mathcal{ATT : ARMANDO} \\ \mathfrak{\small04\diagup01\diagup2021} \\ \mathfrak{\small{9} :{49} \: \: pm}[/tex]
