guillia01owp7b7
guillia01owp7b7
05-12-2017
Mathematics
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multiply the binomial (3x-2)(3x+2)
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mathstudent55
mathstudent55
05-12-2017
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
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