计算:(1)(x+1)÷(2+1+x
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/24 14:53:32
计算:
(1)(x+1)÷(2+
(1)(x+1)÷(2+
1+x
(1)原式=)(x+1)÷
x2+2x+1 x, =(x+1)× x (x+1)2 = x x+1; (2)原式= a2+4a+4−a2−8 (a+2)2× a(a+2) 4(a−1) = 4(a−1) a+2× a 4(a−1) = a a+2.
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计算:(1)(x+1)÷(2+1+x
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