Question

RESOLVA A EQUAÇÃO IRRACIONAL
$\sqrt{ \times + 3} = 8$
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Answer 1

Bom dia,

$\sqrt{x+3} = 8\\ (\sqrt{x+3})^2 = 8^2\\x + 3 = 64\\x = 61\\\\S = \{61\}$

Abraços!

Answer 2

√x + 3 = 8

x + 3 = ( 8 ) 2

x + 3 = 64

x = 64 - 3

x = 61