+73 1. Use the following diagram to expand (a + b)² into an equivalent polynomial.
a b
a a² ab
b ab b²
2. Create a rectangle diagram for (x + 3)(x - y - 1).
+129852 1. (a + b)2 =
a b
a a² ab
b ab b²
Listing the terms of the last two terms in the rows, we have
a2 + ab + ab + b2 =
a2 + 2ab + b2
2. .......GM, I don't know exactly what a "rectangle diagram" is, but if it's along the lines of the first problem, we have :
x 3
x x^2 3x
-y -xy - 3y
-1 -x -3
Listing and combining the results of the last two terms in the three rows,we have
x^2 + 3x - xy - 3y - x - 3 =
x^2 + 2x - 3y - xy - 3
+73 Yeah thanks a lot! For the second question I din't understand either but by the way you did the second question I think that right!
