1,
9/4(2x+3)^2=25(2x-3)^2
åæï¼3/2|2x+3| = 5|2x-3|
第ä¸ç§æ
åµï¼3/2(2x+3) = 5(2x-3) 解å¾ï¼x=39/14
第äºç§æ
åµï¼3/2(2x+3) = - 5(2x-3) 解å¾ï¼x=21/26
综ä¸å¾ï¼x=39/14 æ 21/26
2,
åçå°±æ¯æææ ¹å·ç移å°çå·çä¸è¾¹ï¼å·¦å³å¼æ¹ï¼æ¶å»ä¸é¨åæ ¹å·ã
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ä½è¦æ³¨æxçæ£è´é®é¢ï¼æ¬é¢ä¸x>=0
3
ï¼æ ¹å·2)^2=(1+2x^2)^2
å¾ï¼2=1+4x^2+4x^4
å¾ï¼4x^4+4x^2-1=0
解å¾ï¼x^2=ï¼-4+æ ¹å·32ï¼/8=ï¼æ ¹å·2-1ï¼/2
xå°±æ¯æx^2å¼æ ¹å·ï¼ä¸¤ä¸ªè§£ï¼
追é®ç¬¬ä¸é¢ä¸æ¯25æ¯25/36
追ç9/4ï¼2x+3ï¼2=25/36ï¼12x-18ï¼2
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