Mathematics
Senior High
Solved
解き方を教えて下さい。
できれば説明していただけると助かります。
(1) 9a²+3ab-6a-b+1
= 3ah-h+qa² batl
= (3a-Da+(3α-1)²
(2) x2+2yz–zx–4y2
=(2Y-X)z+x² 4 Y ²
= (2Y-X)21X+2Y)XXX-23)
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