Answers

2016-06-23T20:29:08+08:00
Examples☺

1) 4x² - 9
=(2x + 3) (2x - 3)

2) 3m + 24m²
=3m (1 + 8m)

3) 9z² + 12z + 4
=(3z + 2) (3z + 2)
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