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Popular >

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

Solution

expand

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

Solution

x^{2} + 9

Solution steps

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

Apply Difference of Two Squares

(x - 3 i) (x + 3 i) : x^{2} + 9

= x^{2} + 9

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2 (\frac{3}{e ^{4}} + \frac{3}{e ^{16}} + \frac{3}{e ^{36}})

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x^{2} (3 x + \frac{1}{x ^{3}})

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(1 + sec (a)) (1 - sec (a))

Frequently Asked Questions (FAQ)

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