169(x+3)²-196(x-2)²=0
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![169(x+3)²-196(x-2)²=0](/uploads/image/z/1781597-29-7.jpg?t=169%28x%2B3%29%26%23178%3B-196%28x-2%29%26%23178%3B%3D0)
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169(x+3)²-196(x-2)²=0
169(x+3)²-196(x-2)²=0
169(x+3)²-196(x-2)²=0
169(x+3)²-196(x-2)²=0即169(x+3)²=196(x-2)²所以,(x+3)²/(x-2)²=196/169,所以(x+3)/(x+2)=±根号下(196/169)=±14/13当(x+3)/(x+2)=14/13时,x=67
当(x+3)/(x+2)=-14/13时,x=-11/27