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Popular >

simplify (2+i)(1-i)

Solution

simplify

(2 + i) (1 - i)

Solution

3 - i

Solution steps

(2 + i) (1 - i)

Apply complex arithmetic rule:

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

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

Simplify

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

= 3 - i

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Frequently Asked Questions (FAQ)

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