C-03-Q048mediumsingle_mcqSquare of (5a2−y)=?(5a^2 - y) = ?(5a2−y)=?a25a4−10a2y+y225a^4 - 10a^2 y + y^225a4−10a2y+y2b25a4+10a2y+y225a^4 + 10a^2 y + y^225a4+10a2y+y2c25a2−10ay+y225a^2 - 10ay + y^225a2−10ay+y2d25a4−5ay+y225a^4 - 5ay + y^225a4−5ay+y2ব্যাখ্যাWith (p−q)2=p2−2pq+q2(p-q)^2=p^2-2pq+q^2(p−q)2=p2−2pq+q2 where p=5a2, q=yp=5a^2,\ q=yp=5a2, q=y: (5a2)2−2(5a2)(y)+y2=25a4−10a2y+y2(5a^2)^2-2(5a^2)(y)+y^2=25a^4-10a^2y+y^2(5a2)2−2(5a2)(y)+y2=25a4−10a2y+y2. Note (5a2)2=25a4(5a^2)^2=25a^4(5a2)2=25a4, not 25a225a^225a2.