What is simplify-4i\times 5i ?

The solution to simplify-4i\times 5i is 20

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simplify-4i\times 5i

simplify

- 4 i \cdot 5 i

20

Solution steps

- 4 i 5 i

Multiply the numbers:

- 4 \cdot 5 = - 20

= - 20 ii

Apply exponent rule:

aa = a^{2}

ii = i^{2}

= - 20 i^{2}

Apply imaginary number rule:

i^{2} = - 1

= - 20 (- 1)

Multiply the numbers:

- 20 (- 1) = 20

= 20

\frac{4 6}{2} 3

4 i^{2} - 2 i^{3}

+ 5 n^{2} + 10 n + 20

4^{\frac{5}{4}}

3 - 1000