Question

15- (√a + √b) (√a - √b) ​
(a.)-a+b
(b)a-b
(c)2√a
(d)2√b

Answer 1

Answer:

The average of class x is 83 and classy average is to and also average of z is 85. average of nandy is 79 and average of 2 and Y is 81 what is the average of x,y and z? then