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3 years ago

Simplify this radical. /84

Mathematics

2 answers:

Aliun [14]3 years ago

5 0

$\sqrt{84}$
$\sqrt{4 \times 3 \times 7}$
$2\sqrt{21}$

Stella [2.4K]3 years ago

3 0

Answer:

$\sqrt{84}=2\sqrt{21}$

Step-by-step explanation:

we need to simplify the radical $\sqrt{84}$

84 can be written as $2 \cdot 2 \cdot 3 \cdot 7$

$\sqrt{84}=\sqrt{2 \cdot 2 \cdot 3 \cdot 7}$

square root (2*2)= 2

$\sqrt{84}=2\sqrt{3 \cdot 7}$

$\sqrt{84}=2\sqrt{21}$

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