2x²-kx²+3被2x-1除后余2,k是多少
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2x²-kx²+3被2x-1除后余2,k是多少2x²-kx²+3被2x-1除后余2,k是多少2x²-kx²+3被2x-1除后余2,k是多少你
2x²-kx²+3被2x-1除后余2,k是多少
2x²-kx²+3被2x-1除后余2,k是多少
2x²-kx²+3被2x-1除后余2,k是多少
你可以 2x²-kx²+3
=（2x²-kx²）+1+2 =-(2x²-kx²-1 ) +2
当kx²-2x²=4x² k=-6