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Popular >

simplify sqrt(15)*sqrt(21)

Solution

simplify

15 \cdot 21

Solution

335

+1

Decimal Notation

17.74823 \dots

Solution steps

1521

15 = 35

= 3521

21 = 37

= 3537

Apply radical rule:

a a = a, a \geq 0

33 = 3

= 357

Apply radical rule:

a b = ab, a \geq 0, b \geq 0

57 = 5 \cdot 7

= 3 5 \cdot 7

Multiply the numbers:

5 \cdot 7 = 35

= 335

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Frequently Asked Questions (FAQ)

What is sqrt(15)*sqrt(21) ?
The solution to sqrt(15)*sqrt(21) is 3sqrt(35)