Factor:
(Some easy ones...everything's positive)
x² + 5x + 6
a² + 7a + 12
 

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Factor:
(both second terms are negative)
x² - 6x + 9

z² - 10z + 25

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Factor:
(one factor "+" and one factor "-")
a² + 7a - 18

x² - 3x - 10

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Factor:
(no hints on this one...)
x² + 11x - 60

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Factor:
(no hint on this one either..)
y² - 13y + 42
 

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