What is sqrt(-15)*sqrt(-3) ?

The solution to sqrt(-15)*sqrt(-3) is -3sqrt(5)

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simplify sqrt(-15)*sqrt(-3)

simplify

- 15 \cdot - 3

- 35

Decimal Notation

- 6.70820 \dots

Solution steps

- 15 - 3

- 15 = 15 i

= 15 i - 3

- 3 = 3 i

= 15 i 3 i

Apply exponent rule:

aa = a^{2}

ii = i^{2}

= 15 i^{2} 3

= 153 i^{2}

15 = 35

= 353 i^{2}

Apply radical rule:

a a = a, a \geq 0

33 = 3

= 35 i^{2}

Apply imaginary number rule:

i^{2} = - 1

= 35 (- 1)

Multiply the numbers:

3 (- 1) = - 3

= - 35

n^{2} = 10 n + 10

(\frac{3}{10})^{2}

6 x^{2} - 13 x = - 6

4.5 x + 16 = 11.5

- 6 x - 2 = 0