This is homework and I need help in answering question D. Please and thank you :)

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?