PLEASE HELP GIVING BRAINLIEST TO CORRECT ANSWER

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

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2