How can i find the remainder when 5x^3+7x+5 id divided by x+2

Use the polynomial remainder theorem. It states that division of by some linear factor yields a remainder of .

In this case, and , so the remainder is

A) The vertices of the ABCD square are:

(2,2), (1(4), (3,5), and (4,3).

The reflection over the x-axys keeps the same x-coordinate and changes the y-coordinate ot its negative.

So, the vertices of the square A'B'C'D' are:

(2,-2), (1,-4), (3,-5), and (4,-3).

You can see the figure attached showing the four vertices.

B. Is AB congruent to A'B'? Explain



Yes, they are congruent. You can affirm that because reflections are transformations that do not change either sizes or angles, but keep them, so the two squares are congruent.

C. Is the area of ABCD ≈ area of A'B'C'D'? Explain.

Yes, the two areas are equal since you have shown that the two figures are congruent.