What is (5sqrt(81))(5sqrt(-4)) ?

The solution to (5sqrt(81))(5sqrt(-4)) is 450i

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simplify (5sqrt(81))(5sqrt(-4))

simplify

(581) (5 - 4)

450 i

Solution steps

(581) (5 - 4)

581 = 45

= 45 \cdot 5 - 4

Apply radical rule:

- a = a - 1

- 4 = 4 - 1

= 45 \cdot 54 - 1

Apply imaginary number rule:

- 1 = i

= 45 \cdot 54 i

4 = 2

= 45 \cdot 5 \cdot 2 i

Multiply the numbers:

45 \cdot 5 \cdot 2 = 450

= 450 i

2.1 \cdot 1 0^{- 2}

(x - 1)^{3}