A1. Which of the following expressions is equivalent to the expression $(y-2)^{3}-y(y+5)(y-5)-29+6 y^{2}$?
(A) $12 y^{2}+37 y-37$
(B) $-13 y+37$
(C) $37 y-21$
(D) $37(y-1)$
(E) $12 y^{2}-37 y-37$
A1. $(y-2)^{3}-y(y+5)(y-5)-29+6 y^{2}=y^{3}-6 y^{2}+12 y-8-y^{3}+25 y-29+6 y^{2}=37 y-37=$ $37(y-1)$