Question

ayudaaa porfa
$3 + 2. \sqrt{x + 1} = 9$
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Answer 1

Respuesta:

$3 + 2 \sqrt{x + 1} = 9$

$2 \sqrt{x + 1} = 9 - 3$

$2 \sqrt{x + 1} = 6$

$\sqrt{x + 1} = 6 \div 2$

$\sqrt{x + 1} = 3$

$x + 1 = {3}^{2}$

$x + 1 = 9$

$x = 9 - 1$

$x = 8$