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2 years ago

7

Solve the equation:

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

1 answer:

Georgia [21]2 years ago

3 0

Answer:

D) x = √5

Step-by-step explanation:

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

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

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

$x^{2}+4 = 9$

$x^{2} = 9 -4$

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

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