Add and subtract polynomials add. (w2+5w)+(2w2+w+7) can you explain how and what you did?

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Nneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

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?