Resposta:
[tex] \boxed{\red{ \sf{x = 5}}}[/tex]
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} = { \sqrt{7} }^{2} + { \sqrt{18} }^{2} } \\ \\ \sf{ {x}^{2} = 7 + 18} \\ \\ \sf{ {x}^{2} = 25} \\ \\ \sf{x = \sqrt{25} } \\ \\ \boxed{\red{ \sf{x = 5}}} [/tex]
[tex]\mathcal{ATT : ARMANDO} \\ \mathfrak{\small04\diagup01\diagup2021} \\ \mathfrak{\small{3} :{32} \: \: pm}[/tex]
