一元二次方程 ①X²+X-1=0 ②X²-2X-5=0 ③(X-4)²=(5-2X)² ④(X-1一元二次方程①X²+X-1=0②X²-2X-5=0③(X-4)²=(5-2X)²④(X-1)(X+1)=2X求各题答案:
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![一元二次方程 ①X²+X-1=0 ②X²-2X-5=0 ③(X-4)²=(5-2X)² ④(X-1一元二次方程①X²+X-1=0②X²-2X-5=0③(X-4)²=(5-2X)²④(X-1)(X+1)=2X求各题答案:](/uploads/image/z/325560-48-0.jpg?t=%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8B+%E2%91%A0X%26%23178%3B%2BX-1%3D0+%E2%91%A1X%26%23178%3B-2X-5%3D0+%E2%91%A2%28X-4%29%26%23178%3B%3D%285-2X%29%26%23178%3B+%E2%91%A3%28X-1%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8B%E2%91%A0X%26%23178%3B%2BX-1%3D0%E2%91%A1X%26%23178%3B-2X-5%3D0%E2%91%A2%28X-4%29%26%23178%3B%3D%285-2X%29%26%23178%3B%E2%91%A3%28X-1%29%28X%2B1%29%3D2X%E6%B1%82%E5%90%84%E9%A2%98%E7%AD%94%E6%A1%88%3A)
一元二次方程 ①X²+X-1=0 ②X²-2X-5=0 ③(X-4)²=(5-2X)² ④(X-1一元二次方程①X²+X-1=0②X²-2X-5=0③(X-4)²=(5-2X)²④(X-1)(X+1)=2X求各题答案:
一元二次方程 ①X²+X-1=0 ②X²-2X-5=0 ③(X-4)²=(5-2X)² ④(X-1
一元二次方程
①X²+X-1=0
②X²-2X-5=0
③(X-4)²=(5-2X)²
④(X-1)(X+1)=2X
求各题答案:
一元二次方程 ①X²+X-1=0 ②X²-2X-5=0 ③(X-4)²=(5-2X)² ④(X-1一元二次方程①X²+X-1=0②X²-2X-5=0③(X-4)²=(5-2X)²④(X-1)(X+1)=2X求各题答案:
卡西欧95版
1.x=二分之负一加减根号五
2.一±根号六