State the properties of real numbers being used. 2. 2(3+5) = (3 + 5)2
3. (x + 2y) + 3z = x + (2y + 3z)
4. (5x + 1)3 = 15x + 3

Talia grouped the terms and factored out the gcf of the groups of the polynomial 15x2 – 3x – 20x + 4. her work is shown below. (15x2 – 3x) + (–20x + 4) 3x(5x – 1) + 4(–5x + 1) talia noticed that she does not have a common factor. what should she do?