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Popular >

simplify (3-i)(4+i)

Solution

simplify

(3 - i) (4 + i)

Solution

13 - i

Solution steps

(3 - i) (4 + i)

Apply complex arithmetic rule:

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

= (3 \cdot 4 - (- 1) \cdot 1) + (3 \cdot 1 - 1 \cdot 4) i

Simplify

(3 \cdot 4 - (- 1) \cdot 1) + (3 \cdot 1 - 1 \cdot 4) i : 13 - i

= 13 - i

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Frequently Asked Questions (FAQ)

What is (3-i)(4+i) ?
The solution to (3-i)(4+i) is 13-i