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Popular >

simplify (1-2i)*(1+2i)

Solution

simplify

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

Solution

5

Solution steps

(1 - 2 i) (1 + 2 i)

Apply complex arithmetic rule:

(a + bi) (a - bi) = a^{2} + b^{2}

= 1^{2} + (- 2)^{2}

1^{2} + (- 2)^{2} = 5

= 5

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Frequently Asked Questions (FAQ)

What is (1-2i)*(1+2i) ?
The solution to (1-2i)*(1+2i) is 5