What is sqrt(-16)*sqrt(-81) ?

The solution to sqrt(-16)*sqrt(-81) is -36

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

simplify sqrt(-16)*sqrt(-81)

simplify

- 16 \cdot - 81

- 36

Solution steps

- 16 - 81

- 16 = 4 i

= 4 i - 81

- 81 = 9 i

= 4 i 9 i

Multiply the numbers:

4 \cdot 9 = 36

= 36 ii

Apply exponent rule:

aa = a^{2}

ii = i^{2}

= 36 i^{2}

Apply imaginary number rule:

i^{2} = - 1

= 36 (- 1)

Multiply the numbers:

36 (- 1) = - 36

= - 36

5 b + 11 = 56 - 4 b

9 c + 12 = 27 - 3 c

(2 x - 1) - 4 (5 x - 2) \leq 9 - (6 x - 3)

t^{2} + 12 t + 36

86 \cdot \frac{π}{180}