Question

plzzzzzz answer fast ​

Answer 1

$\huge\mathcal{Answer}$

1 + 2 = 21

2 + 3 = 36

3 + 4 = 43

4 + 5 = 54

Answer 2

400

Step-by-step explanation:

1+2=21

2+3=36(4×9=36)

3+4=43

4+5=400(25×16=400)