Question

1+2=13 2+3=61 3+4=193 then 4+5=?

Answer 1

1+2=13
2+3=61
3+4=193
4+5= 164

Answer 2

Answer:

481

Step-by-step explanation:

x + y = ( x . y +2)² - 3

1 + 2 = ( 1 x 2 + 2)² - 3 = 13

2 + 3 = (  2 x 3 + 2)² - 3 = 61

3 + 4 = ( 3 x 4 + 2)² - 3 = 193

4 + 5 = ( 4 x 5 + 2)² - 3 = 22² - 3 = 481