Identify the properties of arithmetic that justify why each of the following equations has a solution set of all real numbers.
a. 2x²+4x=2(x²+2x)
b. 2x²+4x=4x+2x²
c. 2x²+4x=2x(2+x)

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum