Answer:
1) n=±2[tex]\sqrt{5}[/tex]
2) a=±3[tex]\sqrt{10}[/tex]
Step-by-step explanation:
1) [tex]n^{2}[/tex] =20
✰Take the square root of both sides n=±[tex]\sqrt{20\\}[/tex]
✰ Simplify [tex]\sqrt{20\\}[/tex] to 2[tex]\sqrt{5}[/tex]
→ n=±2[tex]\sqrt{5}[/tex]
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2) [tex]a^{2}[/tex] =90
✰ (Same as above) Take the square root of both sides a=±[tex]\sqrt{90\\}[/tex]
✰ Simplify [tex]\sqrt{90}[/tex] to 3[tex]\sqrt{10}[/tex]
→ a=±3[tex]\sqrt{10}[/tex]
