I don’t know the answer I just need to do it so I can ask another question
7x^2-3x - (3x^2 +4x -5) multiply negative one across the entire second term
7x^2 - 3x -3x^2 -4x +5
4x^2 -7x +5
Have you tried multiplying 5(3)+2(2)+1?
15 + 4 + 1 = 20 ?
Im sorry I'm not real good with math.
C
The two triangles are similar — that is, the three angles in triangle EDC correspond to those in ABC
