15*3 = 3*5*3 = 3*3*5
18*5 = 2*3*3*5 = 2*3*3*5
So GCF = numbers that appear in both lists (however many times in both) = 3*3*5 = 45
The GCF of those two terms is 3x3
15x3+12x2
0,6x4=15x3
90
The product of 18 and 5 is 90
105x3
45
It is: 5x
9x5 45x1 15x3
35
Use a calculator, it's 69....
12x6 - 16x3 - 15x3 + 20 = 4x3(3x3 - 4) - 5(3x3 - 4) = (3x3 - 4)(4x3 - 5)