\(1^2+2^2+3^2+4^2+5^2=?\)
\(=1+4+9+16+25\)
\(=55\)
kết bạn rùi hok tốt
\(1^2+2^2+3^2+4^2+5^2\)
\(=1+4+9+16+25\)
\(=55\)
\(1^2+2^2+3^2+4^2+5^2\)
= 1+4+9+16+25
=55
12+22+32+42+52
=1+4+9+16+25
=(1+9)+(4+16)+25
=10+20+25
=30+25
=55
chúc hk tốt
12+22+32+42+52=???????????????????
1+4+9+16+25=55
tk nhoa
\(1^2\)+ \(2^2\)+ \(3^2\)+ \(4^2\)+ \(5^2\)
= 1 + 4 + 9 + 16 + 25
= 55
Trả lời:
\(1^2+2^2+3^2+4^2+5^2\)
\(=1+4+9+16+25\)
\(=55\)
~HOk tốt~