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Multiply the binomial (3x-2)(3x+2)

User Clemisch
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Multiply every term of the left binomial by every term of the right binomial.

(3x - 2)(3x + 2) =

= 3x * 3x + 3x * 2 + (-2) * 3x + (-2) * 2

Do the four multiplications.

= 9x^2 + 6x - 6x - 4

Now combine like terms.

= 9x^2 - 4
User Nikita Jajodia
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