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Earn +20 ptsQ: Is 4.5 the square root of 21?
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Factoring out square root of 45?
3 times the square root of 5
What is the exact value for the expression the square root of 189 minus the square root of 21 plus the square root of 84 Simplify if possible.?
21
How do you find square root of square 21?
The square root and square functions are inverse of one another EXCEPT that square root is not really a function: it is a 1-to-many mapping. So sqrt(square(21)) = sqrt(441) = ±21
What is 2 square root of 20 - square root of 20 plus 3 square root of 20 - 2 square root 45?
It is 2*sqrt(5).
What is the principle square root of 49 over 21 squared?
(√(a))²=a The square root and the square cancel to leave just 49/21■
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