Help on number 10 please.

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

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

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol