Pull out the GCF 4(2a - 1)
(2a - b)(2a + b)
6a to the second power minus 8ab + 2a
The GCF is 4.
(x + 1)(x - 4)
Pull out the GCF 4(2a - 1)
(2a - b)(2a + b)
6a to the second power minus 8ab + 2a
-2a - 4 = -16.8 -2a = -12.8 a = -12.8/-2 a = 6.4
2(a + 7)(a - 6)
4(4a2 - b2) 4(2a + b)(2a - b)
2a-5
2a - a = a
2a+5
(5a+8) - (2a+4) =3a +4 To do this, simply subtract like terms. 5a-2a=3a and 8-4=4
6a2 - 8ab + 2aas you can see a is common to all terms. And 2 is a factor of 6,8, and 2. So 2a is a factor of all three terms:2a(3a-4b+1)
since a=1a, 3a-1a=2a