4d2+16
4(d2+4)
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(g - 16)(g - 16) or (g - 16)2
(3a - 4)(3a - 4)
The greatest common factor is 16: 32 X 5 = 16 X 10; 64 X 4 = 16 X 16; and 16 = 16 X 1. Even though the two numbers could be further reduced, the term with "x" would then be fractional; therefore, 16 is the greatest common factor.
No, 16 is a multiple of 4. 4 is a factor of 16.
It can be and is. Since 16 is not a factor of 42, the GCF will have to be a factor of 16 that is less than 16.