(x-2)²-2(2-2x)-(1+x)(1-x)和其他数学题一.(x-2)²-2(2-2x)-(1+x)(1-x),x=负十二分之七二.In a triangle,if the measures of three angles are x,2x and 3x respectively,then the measure of the largest angl
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![(x-2)²-2(2-2x)-(1+x)(1-x)和其他数学题一.(x-2)²-2(2-2x)-(1+x)(1-x),x=负十二分之七二.In a triangle,if the measures of three angles are x,2x and 3x respectively,then the measure of the largest angl](/uploads/image/z/177274-10-4.jpg?t=%EF%BC%88x-2%EF%BC%89%26%23178%3B-2%EF%BC%882-2x%EF%BC%89-%EF%BC%881%2Bx%EF%BC%89%EF%BC%881-x%EF%BC%89%E5%92%8C%E5%85%B6%E4%BB%96%E6%95%B0%E5%AD%A6%E9%A2%98%E4%B8%80.%EF%BC%88x-2%EF%BC%89%26%23178%3B-2%EF%BC%882-2x%EF%BC%89-%EF%BC%881%2Bx%EF%BC%89%EF%BC%881-x%EF%BC%89%2Cx%3D%E8%B4%9F%E5%8D%81%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%83%E4%BA%8C.In+a+triangle%2Cif+the+measures+of+three+angles+are+x%2C2x+and+3x+respectively%2Cthen+the+measure+of+the+largest+angl)
(x-2)²-2(2-2x)-(1+x)(1-x)和其他数学题一.(x-2)²-2(2-2x)-(1+x)(1-x),x=负十二分之七二.In a triangle,if the measures of three angles are x,2x and 3x respectively,then the measure of the largest angl
(x-2)²-2(2-2x)-(1+x)(1-x)和其他数学题
一.(x-2)²-2(2-2x)-(1+x)(1-x),x=负十二分之七
二.In a triangle,if the measures of three angles are x,2x and 3x respectively,then the measure of the largest angle is( ).
三.方程/x-2/+/x+3/=6的解的个数是多少 //为绝对值符号
(x-2)²-2(2-2x)-(1+x)(1-x)和其他数学题一.(x-2)²-2(2-2x)-(1+x)(1-x),x=负十二分之七二.In a triangle,if the measures of three angles are x,2x and 3x respectively,then the measure of the largest angl
一、原式=2x²-1=-23/72
二、最大角=90°
三、有两个解,分别为-3.5或2.5