Rút gọn : (x+2)^2+(3-x)^2= ?

Ozone asked Dec 15, 2022

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19 votes

Rút gọn :
(x+2)^2+(3-x)^2= ?

Ozone asked Dec 15, 2022

by Ozone

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23 votes

Explanation:

=x^2+2x+4+9-6x+x^2

=2x^2-4x+13

Gokay answered Dec 19, 2022

by Gokay

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