Question

Para que √x + 4 = 7, “x” debe ser: A) -53 B) 3 C) 10 D) 45

Answer 1

Explicación paso a paso:

$\sqrt{x + 4} = 7 \\ x + 4 = 7 {}^{2} \\ x = 49 - 4 \\ x = 45$