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Popular >

simplify (1+i)(2+i)

Solution

simplify

(1 + i) (2 + i)

Solution

1 + 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 : 1 + 3 i

= 1 + 3 i

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3(n-8)-5(n-7)=9

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Frequently Asked Questions (FAQ)

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