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Popular >

simplify (-2-9i)(-2+9i)

Solution

simplify

(- 2 - 9 i) (- 2 + 9 i)

Solution

85

Solution steps

(- 2 - 9 i) (- 2 + 9 i)

Apply complex arithmetic rule:

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

= (- 2)^{2} + (- 9)^{2}

(- 2)^{2} + (- 9)^{2} = 85

= 85

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Frequently Asked Questions (FAQ)

What is (-2-9i)(-2+9i) ?
The solution to (-2-9i)(-2+9i) is 85