5a
5a and 7b
The GCF is 4a. The equation factors into 4a(5a + 9)
The greatest common factor of 16 20 and 36 is 4.
The GCF of 35 a^2 and 85ab is 5a. The GCF of 35 and 85 is 5, and the GCF of a squared and ab is a.
5 is the greatest common factor of 15 and 305.15 factors to [3 5]305 factors to [5 61]common factors are [5] ■5A:5
5a
5a-20=
Factor 5a-15 Factor out the 5; 5(a-3)
5a^2 - 5a - 60 ---- 5(a2 + a - 12)
2b(5a - 7)(5a + 7)
Do the coefficients first. Since 5 is a factor of 15, it is automatically the GCF. Choose the lowest power of the common variables. The GCF is 5a.