expand using suitable identity !
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Step-by-step explanation:
(2a + 3b)²
=> 4a² + 12ab + 9b²
(2x + 4) (2x - 4)
=> 4x² - 16
(5p + 2) (5p + 3)
=> (5p + 2)²
=> 25p² + 20p + 4
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