Question

If X square plus Y Square equals 29 and XY equals to 2, then find 1. X+Y, 2.X-Y, 3. X^4+Y^4

Answer 1

Answer:

(i) under root 33 (ii)5

Step-by-step explanation:

we know that (x+y)^2 = x^2+ 2xy + y^2=33

x+y =

$\sqrt{33}$

again, (x-y)^2= x^2 -2xy + y^2=29-4=25

therefore x-y=5