-2√6+5=(√x-√y)²,则x,y的值分别是
问题描述:
-2√6+5=(√x-√y)²,则x,y的值分别是
答
- 2 √6 + 5= (√2)² - 2 √2 × √3 + (√3)²= (√2 - √3)²= (√x - √y)²∴ x = 2 ,y = 3或 - 2 √6 + 5 = (√3 - √2)² = (√ x - √y)²x = 3 ,y = 2...