find the square root of the following number by short method 529
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When we try to simplify a square root, we look for perfect square factors.
Do this by testing perfect squares until you get to a number whose square if greater that 529 (for example 25^2=625)
So we test 2^2=4. Clearly 4 is not a factor of 529(nor is any other even number.
Test 3^2=9 which is not a factor. Skip 4^2 because it is even.
Obviously 5^2=25 is not a factor. Skip 6^2.
Keep going . . .
23^2=529 so we're finished.
√529=23
Do this by testing perfect squares until you get to a number whose square if greater that 529 (for example 25^2=625)
So we test 2^2=4. Clearly 4 is not a factor of 529(nor is any other even number.
Test 3^2=9 which is not a factor. Skip 4^2 because it is even.
Obviously 5^2=25 is not a factor. Skip 6^2.
Keep going . . .
23^2=529 so we're finished.
√529=23
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