Asked by Mileena
How do you simplify radicals
√162
√162
Answers
Answered by
Reiny
look for factors so that at least one of the factors is a perfect square.
e.g.
162 = 9 * 18
= 9 * 9 * 2
so √162 = √9 * √9 * √2
= 3*3*√2
= 9√2
You can always check your answer using a calculator.
e.g.
162 = 9 * 18
= 9 * 9 * 2
so √162 = √9 * √9 * √2
= 3*3*√2
= 9√2
You can always check your answer using a calculator.
Answered by
Mileena
Ok for √726
726/2 = 363
Then what
726/2 = 363
Then what
Answered by
Mileena
Is answer 11√6
Answered by
Damon
726 = 2*363 ok but
2*363 = 2 * 3 * 121
BUT
121 = 11*11 :)
so we have
1*3*11*11
=11^2 * 6
so sqrt(11^2 * 6) = 11 sqrt 6
2*363 = 2 * 3 * 121
BUT
121 = 11*11 :)
so we have
1*3*11*11
=11^2 * 6
so sqrt(11^2 * 6) = 11 sqrt 6
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