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Popular >

simplify (1-5i)(4-5i)

Solution

simplify

(1 - 5 i) (4 - 5 i)

Solution

- 21 - 25 i

Solution steps

(1 - 5 i) (4 - 5 i)

Apply complex arithmetic rule:

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

= (1 \cdot 4 - (- 5) (- 5)) + (1 \cdot (- 5) - 5 \cdot 4) i

Simplify

(1 \cdot 4 - (- 5) (- 5)) + (1 \cdot (- 5) - 5 \cdot 4) i : - 21 - 25 i

= - 21 - 25 i

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Frequently Asked Questions (FAQ)

What is (1-5i)(4-5i) ?
The solution to (1-5i)(4-5i) is -21-25i