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Popular >

simplify (6-8i)(4+5i)

Solution

simplify

(6 - 8 i) (4 + 5 i)

Solution

64 - 2 i

Solution steps

(6 - 8 i) (4 + 5 i)

Apply complex arithmetic rule:

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

= (6 \cdot 4 - (- 8) \cdot 5) + (6 \cdot 5 - 8 \cdot 4) i

Simplify

(6 \cdot 4 - (- 8) \cdot 5) + (6 \cdot 5 - 8 \cdot 4) i : 64 - 2 i

= 64 - 2 i

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Frequently Asked Questions (FAQ)

What is (6-8i)(4+5i) ?
The solution to (6-8i)(4+5i) is 64-2i