Since 27 is a factor of 54, it is automatically the GCF.
The GCF is 27.
9p + 27 = 9(p + 3)
(a + 9)(a - 3)
a2 + 12a + 27 = (a + 3)(a + 9)
The GCF is 9.
a2 + 28a + 27 = 0 (a + 1)(a + 27) = 0 a = -1 or -27 However, the second line is the factorised form, the third is what a is equal to
(2y + 3)(4y2 - 6y +9)
(r + 9)(r + 3)
(5x - 3)(7x + 9)
33 = 2726 = 647 x 13 = 91
(x + 3)(x^2 - 3x + 9)