各位学霸帮帮忙!!!一道解方程!!!具体的过程麻烦写一下!!! 一道解方程，要具体过程，快
\u9ebb\u70e6\u5404\u4f4d\u5b66\u9738\u5e2e\u5fd9\u89e3\u4e00\u4e0b1\u3001\u6700\u9ad8\u7b49\u7ea7\u7684\u4ee3\u53f7\u662f\uff0c
\u6700\u4f4e\u7b49\u7ea7\u7684\u4ee3\u53f7\u662f\uff0c
\u4ee3\u53f7\u7684\u542b\u4e49\u662f\uff1a\u7528\u53bb\u9664\u6750\u6599\u7684\u65b9\u6cd5\u83b7\u5f97\u7684\u8868\u9762\u7c97\u7cd9\u5ea6\uff0cRa\u7684\u4e0a\u9650\u503c\u4e3a6.3\u03bcm\u3002
2\u3001\u03c650n6\u4e2d\u768450\u8868\u793a\u662f\u8f74\u7684\u516c\u79f0\u76f4\u5f84\u4e3a50mm\uff0cn\u662f\u516c\u5dee\u5e26\u4ee3\u53f7\uff0c6\u662f\u516c\u5dee\u7b49\u7ea7\uff0c\u5176\u6700\u5927\u6781\u9650\u5c3a\u5bf8\u662f50.033mm\uff0c\u6700\u5c0f\u6781\u9650\u5c3a\u5bf8\u662f50.017mm\uff0c\u516c\u5dee\u503c\u4e3a0.016mm\u3002
3\u3001\u8868\u793a\u88ab\u6d4b\u8981\u7d20\u4e3a\u03c650n6\u5706\u67f1\u7684\u8f74\u7ebf\uff0c\u57fa\u51c6\u8981\u7d20\u4e3a2\u4e2a\u03c632p6\u5706\u67f1\u7684\u516c\u5171\u8f74\u7ebf\uff0c\u516c\u5dee\u9879\u76ee\u662f\u540c\u8f74\u5ea6\uff0c\u516c\u5dee\u503c\u4e3a\u03c60.03mm\uff0c
4\u3001\u8f74\u4e0a\u5e73\u952e\u69fd\u7684\u957f\u5ea6\u4e3a32mm\uff0c\u5bbd\u5ea6\u4e3a14mm\u3002
\u4e24\u8fb9\u540c\u65f6\u4e58\u4ee510
\u5f97\u5230360-5x=2x
\u4e24\u8fb9\u540c\u65f6\u52a0\u4e0a5x\u5f97\u5230
360=7x
\u4e24\u8fb9\u540c\u65f6\u9664\u4ee57
\u5f97\u5230360/7=x
\u628a\u7b49\u53f7\u4e24\u8fb9\u5bf9\u8c03\uff0c\u5f97\u5230
x=360/7
原式等于
[(x+2)(x-1)]²+[(2x-3)(x-1)]²-[(3x-1)(x-1)]²=0
(x-1)²[(x+2)²+(2x-3)²-(3x-1)²]=0
(x-1)²(x²+4x+4+4x²-12x+9-9x²+6x-1)=0
(x-1)²(-4x²-2x+12)=0
-2(x-1)²(2x²+x-6)=0
-2(x-1)²(2x-3)(x+2)=0
所以
-2(x-1)²=0 , x=1
或2x-3=0., x=3/2=1.5
或x+2=0, x=-2
（x^2+x-2)=(x+2)(x-1)
(2x^2-5x+3)=(2x-3)(x-1)
（3x^2-4x+1)=(3x-1)(x-1)
把相同的（x-1)提出来就很简单啦
(x^4+x^2+4+2x^3-4x^2-4x)+(4x^4+24x^2+9-20x^3+12x^2-30x)=9x^4+16x^2+1-24x^3+6x^2-8x
5x^4+33x^2-18x^3-34x+13= 9x^4+16x^2+1-24x^3+6x^2-8x
4x^4+6x^3+11x^2-26x+12=0
绛旓細浣犲ソ锛屽彲鐢鏂圭▼瑙锛岃涔欒溅姣忓皬鏃惰x鍗冪背锛岀敳銆佷箼涓よ溅姣忓皬鏃跺彲琛(x+120)鍗冪背锛6灏忔椂琛6(x+120)锛屽垯6(x+120)=1200+96锛寈+120=1296梅6锛寈=216-120锛寈=96銆傚笇鏈涘浣犳湁甯姪銆
绛旓細鍥炵瓟锛93-2x=31 2x=124 x=62
绛旓細銆
绛旓細鎶婁竴寮忓拰浜屽紡鍔犺捣鏉ュ緱2z锛媥锛7.鍦ㄦ妸杩欐潯寮忓瓙鍜岀涓夋潯鍔犺捣鏉ュ緱4x锛12銆瑙寰梮锛3鍐嶆妸x锛3浠ｅ叆涓寮忓緱3锛峺锛8瑙ｅ緱y锛-5銆傛妸瑙ｅ啀甯﹀叆浜屽紡锛屾渶鍚庤В寰梲锛2銆
绛旓細瑙:璁捐揣杞︽瘡灏忔椂琛寈鍗冪背 65脳5-5x=85脳2 5x=325-170 x=155梅5 x=31
绛旓細鍥炵瓟锛氳鐜懓鑺变负x鏍,鐧惧悎鑺变负80/100+5=165鎵浠ョ帿鐟拌姳=16*8=128
绛旓細绠楁湳瑙ｏ細锛109 - 8.4脳6.5锛壝8=6.8锛堝厓/姣忕背锛鏂圭▼瑙锛氳鐧藉竷姣忕背 x 鍏冿紝鏍规嵁棰樻剰寰楁柟绋嬶細 8.4 脳6.5 + 8x =109 瑙ｅ緱锛歺=6.8
绛旓細绗涓閬:X梅锛9涓0.4锛塜X锛8
绛旓細涓閬撹В鏂圭▼棰 鎬!鍚勪綅甯府蹇! 4x=3x+3 x=3 浠ｅ叆3x+2m=4x+1 9+2m=12+1 2m=4 m=2 璺眰鍚勪綅鑲℃皯澶т粰甯姪灏忓紵鈥︽モ! 鍍忔ゼ涓昏繖鏍风殑鏃㈣涓婄彮,鍙堣鐐掕偂鐨勪汉鏉ヨ, 鏍规湰灏辨病鏈夊灏戞椂闂存潵鍏虫敞澶х洏,鑰屼笖妤间富鍙堟槸鏂版墜, 鎵浠ヨ妤间富涓瀹氭棤娉曞湪鐐掕偂涓婇潰鐐掑嚭鎴愬氨鍑烘潵, 鍏跺疄璇寸倰鑲＄畝鍗曚篃灏辩畝鍗,璇寸倰鑲″洶闅句篃灏卞洶闅...
绛旓細鍥炵瓟锛瑙:(1)璁炬瘡鍚嶅緬寮熶竴澶╃矇鍒风殑闈㈢Н涓簒m2,甯堝倕涓(x+30)m2,鍒=,瑙ｅ緱x=90,鎵浠ユ瘡涓埧闂撮渶瑕佺矇鍒风殑澧欓潰闈㈢Н涓=50骞虫柟绫. 绛:姣忎釜鎴块棿闇瑕佺矇鍒风殑澧欓潰闈㈢Н涓50骞虫柟绫. (2)鐢(1)鍙煡姣忓悕寰掑紵涓澶╃矇鍒风殑闈㈢Н涓90m2,甯堝倕涓120m2,鍒=6澶.绛:鑻ヨ1鍚嶅笀鍌呭甫2鍚嶅緬寮熷幓,闇瑕6澶╁畬鎴. (3)绗竴绉...
