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Popular >

simplify (-3-4i)(12+5i)

Solution

simplify

(- 3 - 4 i) (12 + 5 i)

Solution

- 16 - 63 i

Solution steps

(- 3 - 4 i) (12 + 5 i)

Apply complex arithmetic rule:

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

= (- 3 \cdot 12 - (- 4) \cdot 5) + (- 3 \cdot 5 - 4 \cdot 12) i

Simplify

(- 3 \cdot 12 - (- 4) \cdot 5) + (- 3 \cdot 5 - 4 \cdot 12) i : - 16 - 63 i

= - 16 - 63 i

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Frequently Asked Questions (FAQ)

What is (-3-4i)(12+5i) ?
The solution to (-3-4i)(12+5i) is -16-63i