2x平方加48x等于付432
2X\u7684\u5e73\u65b9\u51cf2X\u52a05\u7b49\u4e8e0\u3002\u65e0\u89e3\uff0c\u4e0d\u5b58\u5728\u5b9e\u6570\u6839\u3002
\u5341\u5b57\u76f8\u4e58\u6cd5\u5316\u89e3\u4e3a2\uff08x-17\uff09\uff08x-7\uff09=0\u6240\u4ee5x=7\u548c17
式子等于x²+24x=216;配方x²+24x+144=216+144
(x+12)²=360
所以x=±6根号10-12
绛旓細x+2x-48=0 锛坸+8锛夛紙x-6锛=0 x=-8鎴栬厁=6 鍥炵瓟瀹屾瘯~~鏈夌枒闂杩介棶锛屾棤鐤戦棶璇风偣鍑汇愰噰绾炽憕绁濆涔犺繘姝~~\(^o^)/~
绛旓細鍥炵瓟锛48+2x=102 2x=102-48 2x=54 X=54梅2 X=27
绛旓細x鐨骞虫柟鍔2x绛変簬48 x²+2x=48 x²+2x-48=0 锛坸+8锛(x-6)=0 x=-8 x=6
绛旓細X^2+8X=48锛(X+4)^2=64锛孹+4=卤8锛孹1=4锛孹2=-12銆
绛旓細鍥炵瓟锛2x=432梅48 x=9梅2 x=4.5
绛旓細2^(2x+1)+4^x=48 2* 2^(2x)+2^(2x)=48 3* 2^(2x)=48 2^(2x)=16=2^4 2x=4 x=2
绛旓細2x²=48 x²=24 x=2鈭6 鎴 x=- 2鈭6
绛旓細x+2x+4x=48 瑙o細鍚堝苟鍚岀被椤癸紝寰 7x=48 绯绘暟鍖栦负1锛屽緱 x=48/7
绛旓細48+2xX8=90 16x=90-48 x=42梅16 x=2.625
绛旓細48x + 72x = 1320 120x = 1320 x = 11