6x(x十7)二126用方程来解

126\u00f7x=42\u7684\u65b9\u7a0b\u600e\u4e48\u89e3

\u7528126\u9664\u4ee542\u5c31\u884c\u4e86 \u7ed3\u679c\u7b49\u4e8e3

=
1/6x=2/9x-21
7/18x=21
x=54

6x+7x-126=0
△=49+3024=3073
x1=(-7+√3073)/12
x2=(-7-√3073)/12

6x(x鍗7)浜126鐢ㄦ柟绋嬫潵瑙
绛旓細鍥炵瓟锛6x+7x-126=0 鈻=49+3024=3073 x1=(-7+鈭3073)/12 x2=(-7-鈭3073)/12

6(x+7)=126鎬庝箞瑙ｇ畻寮
绛旓細6x=126-42锛堢Щ椤锛6x=84 x=14

6(x+7)=126鐨瑙ｃ堣繃绋嬨
绛旓細6X锛28锛126 6X=98 X=49/3

6x+7y=126 x=? y=?鍙互鍛婅瘔鎴戠瓟妗堝悧
绛旓細6x/7+y=18 鈭磝=0,y=18 x=7,y=12 x=14,y=6 x=21,y=0

6蠂+7X6=126 (畏+3)梅5=1.3 3X(79+蠂)=357 瑙鏂圭▼
绛旓細6蠂+7X6=126 瑙ｏ細6x=126-42 6x=84 x=14 (畏+3)梅5=1.3 瑙ｏ細n+3=1.3X5 n+3=6.5 n=3.5 3X(79+蠂)=357 瑙ｏ細79+x=119 x=40

瀛︽牎閲鐨鏌忔爲鍜屾潹鏍戜竴鍏辨湁126妫,鏌忔爲鐨勬５鏁版槸鏉ㄦ爲鐨6鍊.鏌忔爲鍜屾潹鏍戝悇鏈...
绛旓細瑙ｏ細璁炬潹鏍戞湁x妫碉紝鍒欐煆鏍戞湁6x妫 x+6x=126 7x=126 x=126梅7 x=18 鏉ㄦ爲锛18妫鏌忔爲锛126-18=108锛堟５锛

6脳(+X+5)=126鎬庝箞妫楠?
绛旓細浣犲ソ锛氳В绛斿涓嬶細楠岀畻濡備笅锛鏂圭▼宸﹁竟=6脳锛坸+5锛=6脳锛16+5锛=6脳21=126=鏂圭▼鍙宠竟銆傛墍浠ヨ绠楁纭

鎬庢牱瑙ｈ繖閬6x(x+5)=126鏂圭▼
绛旓細瑙ｇ敱6x(x+5)=126 寰梮(x+5)=21 鍗硏^2+5x-21=0 鍏段=5^2-4(-21)=109 鏁呰В寰 x=(-5+鈭109)/2鎴杧=(-5-鈭109)/2

6x灏鎷彿x+5鎷彿绛変簬126鏂圭▼鐨瑙ｇ殑鍏ㄨ繃绋
绛旓細6X(X+5)=126锛孹^2+5X=21锛(X+5/2)^2=109/4锛孹+5/2=卤鈭109/2锛孹1=(-5+鈭109)/2锛孹2=(-5-鈭109)/2銆

5骞寸骇鏁板绠鏄鏂圭▼ 6(x+5)=126
绛旓細涓よ竟闄や互6 x+5=126梅6 x+5=21 绉婚」 x=21-5 x=16