Question

Solve each equation by taking square roots. Show your work. Simplify your answers. Do not write your answers in decimal form.

Answer 1

Answer:

1) n=±2$\sqrt{5}$

2) a=±3$\sqrt{10}$

Step-by-step explanation:

1) $n^{2}$ =20

✰Take the square root of both sides n=±$\sqrt{20\\}$

✰ Simplify $\sqrt{20\\}$ to 2$\sqrt{5}$

→ n=±2$\sqrt{5}$  

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2) $a^{2}$ =90

✰ (Same as above) Take the square root of both sides ​a=±$\sqrt{90\\}$

✰ Simplify $\sqrt{90}$ to 3$\sqrt{10}$

→ a=±3$\sqrt{10}$