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Popular >

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

Solution

simplify

(- 1 - 2 i) (- 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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simplify (7x)/5-9/4 simplify

\frac{7 x}{5} - \frac{9}{4}

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Frequently Asked Questions (FAQ)

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