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Popular >

simplify (x-3i)(x+3i)

Solution

simplify

(x - 3 i) (x + 3 i)

Solution

x^{2} + 9

Solution steps

(x - 3 i) (x + 3 i)

Apply complex arithmetic rule:

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

= x^{2} + (- 3)^{2}

(- 3)^{2} = 9

= x^{2} + 9

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join-pi/6+pi join

- \frac{π}{6} + π

Frequently Asked Questions (FAQ)

What is (x-3i)(x+3i) ?
The solution to (x-3i)(x+3i) is x^2+9