Mathematics
Junior High
Solved
計算のやり方がわかりません。解答は写真の右側のようになるのですが□で囲んでいる部分にどうやったらなるのかがわかりません。教えて下さい🙇
x² + (11-x)² = (165)
x²+(121-22x+xc=65
2x² - 22x
√x²-11x+28=01
(4)(27)=0
65-121
光:4.7
2x²-22x=-56
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