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Fx=x^2+4x+7
简化 Fx = x2 + 4x + 7 重新排序条件: xF = 7 + 4x + x2 解: xF = 7 + 4x + x2 求解变量 'x'. 重新排序条件: -7 + -4x + xF + -1x2 = 7 + 4x + x2 + -7 + -4x + -1x2 重新排序条件: -7 + -4x + xF + -1x2 = 7 + -7 + 4x + -4x + x2 + -1x2 组合类似条件: 7 + -7 = 0 -7 + -4x + xF + -1x2 = 0 + 4x + -4x + x2 + -1x2 -7 + -4x + xF + -1x2 = 4x + -4x + x2 + -1x2 组合类似条件: 4x + -4x = 0 -7 + -4x + xF + -1x2 = 0 + x2 + -1x2 -7 + -4x + xF + -1x2 = x2 + -1x2 组合类似条件: x2 + -1x2 = 0 -7 + -4x + xF + -1x2 = 0 这个方程的解无法确定..
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