绗崄鍥涚珷
鏁村紡鐨勭殑涔樻硶涓庡洜寮忓垎瑙ｅ瀛︽
銆愬涔犵洰鏍囥�?/p>
1
銆佸洖椤炬湰绔犵煡璇嗙偣锛屾瀯寤虹煡璇嗙綉缁?/p>
2
銆佺悊瑙ｆ暣寮忎箻娉曞拰鍥犲紡鍒嗚В鐨勫叧绯?/p>
3
銆佹�荤粨鏄撻敊鐐癸紝浜嗚В瑙ｉ鎶�宸с�佽В棰樻楠?/p>
(
灞曠ず涓�寮犲够鐏墖
)
銆愬涔犺繃绋嬨�?/p>
涓�銆佸熀纭�鐭ヨ瘑鍥為【
锛堜竴锛変箻娉曞叕寮?/p>
1
銆佸钩鏂瑰樊鍏紡锛?/p>
锛?/p>
a+b
锛?/p>
(a-b) =
2
銆佸畬鍏ㄥ钩鏂瑰叕寮忥細
锛?/p>
a+b
锛?/p>
2
= (a-b)
2
=
3
銆?/p>
璁?/p>
绠?/p>
锛?/p>
1
锛?/p>
锛?/p>
a-b
锛?/p>
(b+a)
(2)
(-a-b)(-a+b)
(3)
(a-b)(-a-b)
(4)
(-a-b)(a+b)
(5)
(-a+b)
2
(6)
(a-b)
2
(7) (-a-b)
2
(8)(a-1)(a+1)(a
2
+1)
(9)
(-2m+5n)
2
(10)
(5n-2m)
2
(
浜?/p>
)
鍥犲紡鍒嗚В
鏂规硶
1
銆佹彁鍏洜寮忔硶锛?/p>
ma+mb+mc=