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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

Popular Examples

x^2+(40x)/(12)+128/60 =0

x^{2} + \frac{40 x}{12} + \frac{128}{60} = 0

simplify (-4+i)(-4-i)simplify

(- 4 + i) (- 4 - i)

simplify (-1/5)^{-1}simplify

(- \frac{1}{5})^{- 1}

\frac{10}{x + 2} > 0

5 y \geq 10

Frequently Asked Questions (FAQ)

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