en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

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

Solution

simplify

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

Solution

85

Solution steps

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

Apply complex arithmetic rule:

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

= 9^{2} + 2^{2}

9^{2} + 2^{2} = 85

= 85

Popular Examples

simplify (7-8i)^{-1}simplify

(7 - 8 i)^{- 1}

simplify (-18)/6 simplify

\frac{- 18}{6}

simplify 32^{0.4}simplify

3 2^{0.4}

simplify-(-3.4c+1)simplify

- (- 3.4 c + 1)

simplify-1/3+(-3/8)simplify

- \frac{1}{3} + (- \frac{3}{8})

Frequently Asked Questions (FAQ)

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