Mathematics
Junior High
⑻と⑼のやり方が分かりません💦解説お願いします🙏
(7)a=14 のとき, α-10a + 24 の値
(8) α=25,b=-5 のとき, α-2ab-1562 の値
(9)x+y=6,x-y=9のとき,x2-y2の値
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