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Popular >

simplify (11+7i)(-1+7i)

Solution

simplify

(11 + 7 i) (- 1 + 7 i)

Solution

- 60 + 70 i

Solution steps

(11 + 7 i) (- 1 + 7 i)

Apply complex arithmetic rule:

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

= (11 (- 1) - 7 \cdot 7) + (11 \cdot 7 + 7 (- 1)) i

Simplify

(11 (- 1) - 7 \cdot 7) + (11 \cdot 7 + 7 (- 1)) i : - 60 + 70 i

= - 60 + 70 i

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Frequently Asked Questions (FAQ)

What is (11+7i)(-1+7i) ?
The solution to (11+7i)(-1+7i) is -60+70i