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(3a+4) (3a-4) by FOIL Method

~ Multiply the First term "(3a)(3a)"
~ Multiply the Outer term "(3a)(-4)"
~ Multiply the Inner term "(4)(3a)"
~Multiply the Last term "(4)(-4)"

9 a^{2} -12a +12a -16
9 a^{2} - 16
1 5 1
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