当-3≤x≤2时,化简|x-2| + √(x+3)² + √x² - 10x + 25=
网友回答
x-2≤0x+3≥0x-5所以原式=2-x+|x+3|+√(x-5)²
=2-x+x+3+|x-5|
=5+(5-x)
=10-x======以下答案可供参考======
供参考答案1:
|x-2| + √(x+3)² + √x² - 10x + 25
=|x-2| + √(x+3)² + √(x-5)²
=2-x+x+3+5-x
=10-x供参考答案2:
x≤2|x-2|=2-x
√(x+3)² =x+3
√x² - 10x + 25=√(x-5)²=5-x
|x-2| + √(x+3)² + √x² - 10x + 25
==2-x+x+3+5-x
=10-x