Question

If 1+2=3
3+4=21
5+6=55

then 4+5=?

with explanation

Answer 1

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so first in 1+2= 3 its
1(1+2) =3 then it makes a succession in which you go with multiplying 1 2 3 4 5 6 7 8 and so on by 1+2,2+3,3+4 and so on like this :
1(1+2)=3
2(2+3)=10
3(3+4)=21
4(4+5)=36
and finally there’s 5(5+6) which equals 55
the answer is already there in the procedure i believe it s 36 :)

Answer 2

Here is your answer:

1+2=3 (3×1)=3

3+4=21 (3+4=7×3)=21

5+6=(5+6=11×5)=55

4+5=(4+5=9×4)=36

MARK AS BRAINLIEST