题目
计算:-|||-(x- (1))^2+(x+3)(x-3)+(x-3)(x-1).

题目解答
答案

解析
步骤 1:展开 $(x-1)^2$
$(x-1)^2 = x^2 - 2x + 1$
步骤 2:展开 $(x+3)(x-3)$
$(x+3)(x-3) = x^2 - 9$
步骤 3:展开 $(x-3)(x-1)$
$(x-3)(x-1) = x^2 - 4x + 3$
步骤 4:将上述结果相加
$(x^2 - 2x + 1) + (x^2 - 9) + (x^2 - 4x + 3) = 3x^2 - 6x - 5$
$(x-1)^2 = x^2 - 2x + 1$
步骤 2:展开 $(x+3)(x-3)$
$(x+3)(x-3) = x^2 - 9$
步骤 3:展开 $(x-3)(x-1)$
$(x-3)(x-1) = x^2 - 4x + 3$
步骤 4:将上述结果相加
$(x^2 - 2x + 1) + (x^2 - 9) + (x^2 - 4x + 3) = 3x^2 - 6x - 5$