Mathematics
Senior High
228の(１)を教えてください
228 *(1) x+ (2y-1)x+y(yー1)
*(2) x-2xy+y?+x-y-2
(3) xーxy-2y+2x-7y-3
*(4) 2x-3xyー2y?+5x+5y-3
(5) 6x?+5xy-6y?+x-5y-1
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ありがとうございます