25(a-2b)^2+4(2b-a)因式分解(9a^2+2b^2)(7a-8b)^2-(2a^2+9b^2)(8b-7a)^2_数学解答

25(a-2b)^2+4(2b-a)因式分解
(9a^2+2b^2)(7a-8b)^2-(2a^2+9b^2)(8b-7a)^2

人气：127 ℃　时间：2020-04-07 09:24:09

解答

25(a - 2b)" + 4(2b - a)= 25( a - 2b )" - 4( a - 2b )= ( a - 2b )( 25a - 50b ) - 4( a - 2b )= ( a - 2b )( 25a - 50b - 4 )(9a" + 2b")(7a - 8b)" - (2a" + 9b")(8b - 7a)"= ( 9a" + 2b" )( 7a - 8b )" - ( 2a"...