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Popular >

simplify (-3+9i)(5i)

Solution

simplify

(- 3 + 9 i) (5 i)

Solution

- 45 - 15 i

Solution steps

(- 3 + 9 i) (5 i)

= 5 i (- 3 + 9 i)

Apply the distributive law:

a (b + c) = ab + a c

(5 i) (- 3 + 9 i) = 5 i (- 3) + 5 i 9 i

= 5 i (- 3) + 5 i 9 i

Simplify

5 i (- 3) + 5 i 9 i : - 15 i - 45

= - 15 i - 45

Rewrite in standard complex form:

- 45 - 15 i

= - 45 - 15 i

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Frequently Asked Questions (FAQ)

What is (-3+9i)(5i) ?
The solution to (-3+9i)(5i) is -45-15i