(x+2) (x-2) (x 2 +4)
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(a+b)(a-b)= a square - b square
(x+2)(x-2)= x square - 2 square
》x square -4( x square + 4)
》x square - 4 square
》x square - 16
(x+2)(x-2)= x square - 2 square
》x square -4( x square + 4)
》x square - 4 square
》x square - 16
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