(a + 2 - b) (a + 2 + b)
a2 - 4a + 4
4(a + 2b - 4c)
4(x+y)^2
9x^(2) + 16 DOES NOT factor. Remember ; two squared terms with a plus(+) between them DOES NOT factor However, two squared terms with a minus(-) between them DOES factor . Hence 9x^(2) + 16 = (3x)^2) + 4^(2) does NOT factor However, 9x^(2) - 16 = (3x)^2) - 4^(2) does factor to ( (3x - 4)(3x + 4) Note the two different signs.
(b + 4)(b + 4)
a2 - 4a + 4
4(a+5b)
4(a + 2b - 4c)
The greatest common factor (GCF) is 4.
4(x+y)^2
(b + 4)(b + 4)
Factor it out: (x+2) squared
(3x - y+ 2)(3x + y + 2)
(2x+3)(2x+4)
(3+2) (4+48)
(b + 8)(b + 4)
2(x^2 + 2)