Question

1+4=5, 2+5=12, 3+6=21, 5+8 =?

Answer 1

The answer is 45

EXPLANATION:-

1+4=5=1×(4+1)=5

2+5=12=2×(5+1)=12

3+6=21=3×(6+1)=21

5+8=x=5×(8+1)=45

therefore,the answer is 45

Answer 2

The answer is 45 I am sure

x + y = xy + x

The first term is added to the product of the second and first term