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Popular >

simplify (2x+3i)(2x-3i)

Solution

simplify

(2 x + 3 i) (2 x - 3 i)

Solution

4 x^{2} + 9

Solution steps

(2 x + 3 i) (2 x - 3 i)

Apply complex arithmetic rule:

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

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

(2 x)^{2} = 4 x^{2}

3^{2} = 9

= 4 x^{2} + 9

Popular Examples

3 x^{2} - 12 x + 13 = 0

simplify (sqrt(xy))/(\sqrt[3]{125xy)}simplify

12 = 2 + 27 t - 16 t^{2}

sqrt(5)^2+b^2=6^2

5^{2} + b^{2} = 6^{2}

15x*25(8000-x)=161000

15 x \cdot 25 (8000 - x) = 161000

Frequently Asked Questions (FAQ)

What is (2x+3i)(2x-3i) ?
The solution to (2x+3i)(2x-3i) is 4x^2+9