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Exercise

$\sqrt{1}\cdot\sqrt{18}\cdot\sqrt{21}$

Step-by-step Solution

1

$1$ raised to any expression (except infinity) is equal to $1$

$\sqrt{18}\sqrt{21}$
2

Rewrite $18$ as a power

$\sqrt{2\cdot 3^{2}}\sqrt{21}$
3

The power of a product is equal to the product of it's factors raised to the same power

$3\sqrt{2}\sqrt{21}$
4

Apply the property of power of a product in reverse: $a^n\cdot b^n=(a\cdot b)^n$

$3\sqrt{42}$

Final answer to the exercise

$3\sqrt{42}$

Exact Numeric Answer

$19.442222$

Try other ways to solve this exercise

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