Question

Question for today is

if
1+1=5
2+2=20
3+3=45

Then

4+4=??

Give full explanation

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Answer 1

1+1 = 5

1×1× 5 = 5

2+2 = 20

2×2 ×5 = 20

3+3= 45

3×3 ×5 = 45

So, 4+4

= 4× 4×5

= 80

Answer 2

$\huge{\mathfrak{</p><p><strong>Answer:</strong></p><p>}}$

$\large{\bf{We \:will \:do \: this \: question\:by\:using \:a\: formula}}$

$\huge{\bf{Given}}$

$\large\bf{First \:\: term \: = \: 5}$

$\large{\bf{Difference \: \: is \: \:increasing \: \: 10 \: \: more}}$

$\large{\bf{So, \:now \: we \: will \: add \: 35 \: in \: 45}}$

$\large{\bf{So,\:\: 35 \:+\:45\:=\:80}}$

$\huge{\red{\boxed{80}}}$