Question

1)16/√7-√23 решите пожалуста
2)46/√23

Answer 1

16/(√7 - √23) = 16*(√7 + √23) / ((√7 - √23)(√7 + √23)) =
                    = 16*(√7 + √23) / (7 - 23) = - (√7 + √23) = -√7 -√23

46/√23 = 46√23/(√23 * √23) = (46√23)/23 = 2√23

Answer 2

5)x√x+y√y/√x+√y

Answer 3

6)√81a+√9a-√49a

Answer 4

7)4x^2-2x√2x+2x-√2x+1.при х>0

Answer 5

8)1/√5-√3+2

Answer 6

9)1/5+2√6+1/5-2√6 плиззз