Mathematics
Junior High
因数分解教えてください。その三
⑥a²+25b²-10ab-a+5b-42
⑦a(x-1)-b(1-x)
⑧x²-8xy+16y²-25
⑨a²+6ab+9b²+4a+12b+4
⑩a²-2ab+b²-5a+5b-14
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