How do i solve x squared -7=-8 by taking square roots

What is the range of the data below? .8090100

Is trapezoid abdc the result of a dilation of trapezoid mnpq by a scale factor of ? why or why not? yes, because ab and cd are each the lengths mn and qp. yes, because sides ab and cd are parallel to sides mn and qp. no, because ab is the length mn but cd is the length qp. no, because sides ab and cd have different slopes from sides mn and qp.

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36