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(a + 9)(a - 3)
36a2 - 60a + 25 = 36a2 - 30a - 30a + 25 = 6a(6a - 5) - 5(6a - 5) = (6a - 5)(6a - 5) = (6a - 5)2
(7a - 1)(6a + 1)
a+6a+a=8a
6a plus 18b = 24
6a
Divide by 6a: 6a(a + 3b)
6ax2 + 6ax + 6a = 6a(x2 + x + 1)
6a squared-8ab+2a factor completely and check mentally
6a to the second power minus 8ab + 2a
(a + 9)(a - 3)
36a2 - 60a + 25 = 36a2 - 30a - 30a + 25 = 6a(6a - 5) - 5(6a - 5) = (6a - 5)(6a - 5) = (6a - 5)2
(7a - 1)(6a + 1)
a+6a+a=8a
6a plus 18b = 24
6a
6a + 6b = 6(a + b)