Which pair of expressions are equivalent?

You are assembling pieces of an iron gate to complete a fence. the finished gate will look like the one below. in order to assemble the gate it is important to under how the pieces are related. part 1: how are pies 1 and 2 in the archway related? part 2: how are the rectangular sections 5 and 6 in the center of the gate related to each other?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Whose conclusion is correct? choose all that apply. (two max) elijah emily edward esme