What are the values of x and y?
y = √(12 + x)2 - 152
y = √x2 + 92
This means: √x2 + 92 = √(12 + x)2 - 152
x2 + 92 = (12 + x)2 - 152
x2 + 81 = x2 + 24x + 144 - 225
x2 = x2 + 24x - 162
162 = 24x
x = 6.75
= √(6.75)2 + 81
= √(45.5625 + 81)
= √126.5625
y = 11.25
+592 
