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Popular >

simplify (5-7i)(8+13i)

Solution

simplify

(5 - 7 i) (8 + 13 i)

Solution

131 + 9 i

Solution steps

(5 - 7 i) (8 + 13 i)

Apply complex arithmetic rule:

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

= (5 \cdot 8 - (- 7) \cdot 13) + (5 \cdot 13 - 7 \cdot 8) i

Simplify

(5 \cdot 8 - (- 7) \cdot 13) + (5 \cdot 13 - 7 \cdot 8) i : 131 + 9 i

= 131 + 9 i

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Frequently Asked Questions (FAQ)

What is (5-7i)(8+13i) ?
The solution to (5-7i)(8+13i) is 131+9i