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Popular >

simplify (8+7i)(-2+5i)

Solution

simplify

(8 + 7 i) (- 2 + 5 i)

Solution

- 51 + 26 i

Solution steps

(8 + 7 i) (- 2 + 5 i)

Apply complex arithmetic rule:

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

= (8 (- 2) - 7 \cdot 5) + (8 \cdot 5 + 7 (- 2)) i

Simplify

(8 (- 2) - 7 \cdot 5) + (8 \cdot 5 + 7 (- 2)) i : - 51 + 26 i

= - 51 + 26 i

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Frequently Asked Questions (FAQ)

What is (8+7i)(-2+5i) ?
The solution to (8+7i)(-2+5i) is -51+26i