Add by first simplifying each radical

Algebra
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sqrt8 + sqrt18=

Jul 24th, 2015

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sqrt8 + sqrt18

= √8 + √18

= √(4*2)  + √(9*2)

 = √4 * √2 + √9* √2

= 2 * √2 + 3 √2

 = (2+3) √2

 = 5 √2.....................................answer



answer is 5 √2


please best my answer.....thank you
Jul 24th, 2015

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