What is 22 squared

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What is 22 squared

Guest Aug 6, 2014

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Best Answer

if you want to do it in your head it is 400+80+4=484

I did this as a perfect square of (20+2)

$$\\(20+2)^2=20^2+2*2*20+2^2 = 400+80+4 = 484\\\\
\mbox{This is because}\\\\
(a+b)^2=a^2+2ab+b^2$$

Melody Aug 6, 2014

Melody · Answer 1 · 2014-08-06T01:40:02

if you want to do it in your head it is 400+80+4=484

I did this as a perfect square of (20+2)

$$\\(20+2)^2=20^2+2*2*20+2^2 = 400+80+4 = 484\\\\
\mbox{This is because}\\\\
(a+b)^2=a^2+2ab+b^2$$

AzizHusain · Answer 2 · 2014-08-06T01:35:03

$${{\mathtt{22}}}^{{\mathtt{2}}}$$ = 22*22 = 484.