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Popular >

simplify (2+5i)(-4-3i)

Solution

simplify

(2 + 5 i) (- 4 - 3 i)

Solution

7 - 26 i

Solution steps

(2 + 5 i) (- 4 - 3 i)

Apply complex arithmetic rule:

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

= (2 (- 4) - 5 (- 3)) + (2 (- 3) + 5 (- 4)) i

Simplify

(2 (- 4) - 5 (- 3)) + (2 (- 3) + 5 (- 4)) i : 7 - 26 i

= 7 - 26 i

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Frequently Asked Questions (FAQ)

What is (2+5i)(-4-3i) ?
The solution to (2+5i)(-4-3i) is 7-26i