Resposta:
ITEM (D)
Explicação passo-a-passo:
[tex]\blue {{ _{\heartsuit} } \heartsuit_{\heartsuit} } \: \: \mathsf {OI, TUDO \: \: J\acute{O}IA \: ? \: \:\blue {{ _{\heartsuit} } \heartsuit_{\heartsuit} } }[/tex]
[tex] \sf{ {(x + y)}^{2} = 60 + 2 \times 20} \\ \sf{ {(x + y)}^{2} = 60 + 40} \\ \sf{ {(x + y)}^{2} = 100} \\ \sf{(x + y) = \sqrt{100} } \\ \sf{(x + y) = 10} \\ \boxed{\red{ \sf{x + y = 10}}}[/tex]
[tex]\mathcal{ATT : ARMANDO}[/tex]
[tex]\mathfrak{\small03\diagup01\diagup2021} \\ \mathfrak{\small{2} :{21} \: \: pm}[/tex]
