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Popular >

simplify (-9+5i)(-5-7i)

Solution

simplify

(- 9 + 5 i) (- 5 - 7 i)

Solution

80 + 38 i

Solution steps

(- 9 + 5 i) (- 5 - 7 i)

Apply complex arithmetic rule:

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

= (- 9 (- 5) - 5 (- 7)) + (- 9 (- 7) + 5 (- 5)) i

Simplify

(- 9 (- 5) - 5 (- 7)) + (- 9 (- 7) + 5 (- 5)) i : 80 + 38 i

= 80 + 38 i

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Frequently Asked Questions (FAQ)

What is (-9+5i)(-5-7i) ?
The solution to (-9+5i)(-5-7i) is 80+38i