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Popular >

simplify (3+8i)(-2-i)

Solution

simplify

(3 + 8 i) (- 2 - i)

Solution

2 - 19 i

Solution steps

(3 + 8 i) (- 2 - i)

Apply complex arithmetic rule:

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

= (3 (- 2) - 8 (- 1)) + (3 (- 1) + 8 (- 2)) i

Simplify

(3 (- 2) - 8 (- 1)) + (3 (- 1) + 8 (- 2)) i : 2 - 19 i

= 2 - 19 i

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Frequently Asked Questions (FAQ)

What is (3+8i)(-2-i) ?
The solution to (3+8i)(-2-i) is 2-19i