Question

Solve the equation:itle="\sqrt{} x^{2} + 4 - 1 = 2" alt="\sqrt{} x^{2} + 4 - 1 = 2" align="absmiddle" class="latex-formula">

Answer 1

Answer:

D) x = √5

Step-by-step explanation:

$\sqrt{x^{2}+4 }-1 = 2$

$\sqrt{x^{2}+4 } = 3$

$x^{2}+4 = 3^{2}$

$x^{2}+4 = 9$

$x^{2} = 9 -4$

$+x = \sqrt{5} , -x = \sqrt{5}$