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Popular >

simplify (1-i)(2+i)

Solution

simplify

(1 - i) (2 + i)

Solution

3 - i

Solution steps

(1 - i) (2 + i)

Apply complex arithmetic rule:

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

= (1 \cdot 2 - (- 1) \cdot 1) + (1 \cdot 1 - 1 \cdot 2) i

Simplify

(1 \cdot 2 - (- 1) \cdot 1) + (1 \cdot 1 - 1 \cdot 2) i : 3 - i

= 3 - i

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expand (6x-y)^2 expand

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Frequently Asked Questions (FAQ)

What is (1-i)(2+i) ?
The solution to (1-i)(2+i) is 3-i