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Popular >

simplify (-3-5i)(7-9i)

Solution

simplify

(- 3 - 5 i) (7 - 9 i)

Solution

- 66 - 8 i

Solution steps

(- 3 - 5 i) (7 - 9 i)

Apply complex arithmetic rule:

(a + bi) (c + d i) = (a c - b d) + (a d + b c) i

= (- 3 \cdot 7 - (- 5) (- 9)) + (- 3 (- 9) - 5 \cdot 7) i

Simplify

(- 3 \cdot 7 - (- 5) (- 9)) + (- 3 (- 9) - 5 \cdot 7) i : - 66 - 8 i

= - 66 - 8 i

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Frequently Asked Questions (FAQ)

What is (-3-5i)(7-9i) ?
The solution to (-3-5i)(7-9i) is -66-8i