如图1,在平面直角坐标系中,A(a,0),B(b,0),C(-1,2),且|2a+b+1|+(a+2b-4)的平方=0. (1)求a,b的值;(2)在X如图1,在平面直角坐标系中,A(a,0),B(b,0),C(-1,2),且|2a+b+1|+(a+2b-4)的平方=0. (1)求a,b的值;(2)在X
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![如图1,在平面直角坐标系中,A(a,0),B(b,0),C(-1,2),且|2a+b+1|+(a+2b-4)的平方=0. (1)求a,b的值;(2)在X如图1,在平面直角坐标系中,A(a,0),B(b,0),C(-1,2),且|2a+b+1|+(a+2b-4)的平方=0. (1)求a,b的值;(2)在X](/uploads/image/z/3941425-1-5.jpg?t=%E5%A6%82%E5%9B%BE1%2C%E5%9C%A8%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2CA%28a%2C0%29%2CB%28b%2C0%29%2CC%28-1%2C2%29%2C%E4%B8%94%7C2a%2Bb%2B1%7C%2B%28a%2B2b-4%29%E7%9A%84%E5%B9%B3%E6%96%B9%3D0.+%EF%BC%881%EF%BC%89%E6%B1%82a%2Cb%E7%9A%84%E5%80%BC%EF%BC%9B%EF%BC%882%EF%BC%89%E5%9C%A8X%E5%A6%82%E5%9B%BE1%2C%E5%9C%A8%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2CA%28a%2C0%29%2CB%28b%2C0%29%2CC%28-1%2C2%29%2C%E4%B8%94%7C2a%2Bb%2B1%7C%2B%28a%2B2b-4%29%E7%9A%84%E5%B9%B3%E6%96%B9%3D0.+%EF%BC%881%EF%BC%89%E6%B1%82a%2Cb%E7%9A%84%E5%80%BC%EF%BC%9B%EF%BC%882%EF%BC%89%E5%9C%A8X)
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