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Popular >

simplify 5i\times (-i)

Solution

simplify

5 i \cdot (- i)

Solution

5

Solution steps

5 i (- i)

Apply rule:

a (- b) = - ab

5 i (- i) = - 5 ii

= - 5 ii

Apply exponent rule:

aa = a^{2}

ii = i^{2}

= - 5 i^{2}

Apply imaginary number rule:

i^{2} = - 1

= - 5 (- 1)

Multiply the numbers:

- 5 (- 1) = 5

= 5

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Frequently Asked Questions (FAQ)

What is 5i\times (-i) ?
The solution to 5i\times (-i) is 5