( 73 ^ 3 + 57 ^ 3 / 130 - 73 * 57 ): ( 22 ^ 2 - 10 ^ 2 ) = ( ( 73 + 57 ) * ( 73 ^ 2 - 73 * 57 + 57 ^ 2 ) / 130 - 73 * 57 ) / ( 22 ^ 2 - 10 ^ 2 ) = ( 130 * ( 73 ^ 2 - 73 * 57 + 57 ^ 2 ) / 130 - 73 * 57 ) / ( 22 ^ 2 - 10 ^ 2 ) = ( 1 * ( 73 ^ 2 - 73 * 57 + 57 ^ 2 ) / 1 - 73 * 57 ) / ( 22 ^ 2 - 10 ^ 2 ) = ( 73 ^ 2 - 73 * 57 + 57 ^ 2 - 73 * 57 ) / ( 22 ^ 2 - 10 ^ 2 ) = ( 73 ^ 2 - 2 * 73 * 57 + 57 ^ 2 ) / ( 22 ^ 2 - 10 ^ 2 ) = ( 73 - 57 ) ^ 2 / ( 22 ^ 2 - 10 ^ 2 ) = 16 ^ 2 / ( 22 ^ 2 - 10 ^ 2 ) = 16 ^ 2 / ( ( 22 - 10 ) * ( 22 + 10 ) ) = 16 ^ 2 / ( 12 * 32 ) = 16 * 16 / ( 12 * 32 ) = 4 * 1 / ( 3 * 2 ) = 4 / ( 3 * 2 ) = 2 / 3 ; Ответ: 2 / 3 .