The all have the same parts and are equal
3x^3 - 12x has a greatest common factor of 3x.
3x(x^2 - 4) is one other way to write it. It was created by factoring out the GCF of 3x.
3x(x+2)(x-2) is another form which is created by factoring the (x^2 - 4) from the last form.
The answer is 41 degrees
180 - 139 degrees = 41 degrees
I think it may be (6/7)^2
The answer would be b=a/c
