What pair of integers (x,y) satisfy, √ x + √ y =4

GRE Quant Problem Solving
1

Here’s my take on today’s problem (27 July Medium Quant)

0001
00012481×3315 145 KB

2

Quantdoubt
Quantdoubt1280×767 197 KB

Here is one way to look at it. Please let me know if I missed something.