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Popular >

simplify (4-2i)(1-2i)

Solution

simplify

(4 - 2 i) (1 - 2 i)

Solution

- 10 i

Solution steps

(4 - 2 i) (1 - 2 i)

Apply complex arithmetic rule:

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

= (4 \cdot 1 - (- 2) (- 2)) + (4 (- 2) - 2 \cdot 1) i

Simplify

(4 \cdot 1 - (- 2) (- 2)) + (4 (- 2) - 2 \cdot 1) i : - 10 i

= - 10 i

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Frequently Asked Questions (FAQ)

What is (4-2i)(1-2i) ?
The solution to (4-2i)(1-2i) is -10i