Corresponding sides of what triangles are proportional

What expression is equivalent to 1/2(2+3x-6)

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36