(3x - 2y^2)(3x + 2y^2) solve using identity
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Answer:
=(3x-2y^2)(3x+2y^2)
=3x(3x+2y^2)-2y^2(3x+2y^2)
=9x^2+6xy^2-6xy^2-4y^4
=9x^2-4y^4
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