Mathematics
Junior High
Resolved
(3)と(4)どうやってやるか教えて欲しいです。
解説お願いします🙇♀️
(1) x² +9xy+20y²
(3) 4x²+4x+1
(5) 49x²-167²
(2) x²-xy-30y² *
(4) 4x²-20xy+25y²
(6) -19+1²
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ありがとうございます！