by using square root table find the square root up on two decimal places of 84
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Answer:
heya.......
± 2 √ 21
Step-by-step explanation:
We can break down
√ 84
into the following:
√ 4 ⋅ √ 21
We are able to do this because of the property
√ a b = √ a ⋅ √ b
Where we can separate the radical into the product of the square root of its factors.
21 and 4 are factors of 84
.
In √ 4 ⋅ √ 21
, we can simplify to get:
± 2 √ 21
*NOTE: The reason we have a ± sign is because the square root of 4 can be positive or negative 2 . √ 21
has no perfect squares as factors, so this is the most we can simplify this expression.
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