Hi(i) 18a² - 50 = 2 ( 9a² - 25 ) = 2 ( 3a + 25 ) ( 3a - 25 )(ii) x² + 5x + 6= x² + 3x + 2x + 6= x ( x + 3 ) + 2 ( x + 3 )= ( x + 2 ) ( x + 3 )(iii) 3p² - 24p + 36 = 3p² - 18p - 6P + 36= 3p ( P - 6 ) - 6 ( p - 6 )= ( 3p - 6 ) ( p - 6 )
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