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dima234256
@dima234256
July 2022
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найти значение выражения (а-5)^2+2(a-5)(a+5)+(a+5)^2 при том что а= --4/9
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yurtin
Verified answer
=((a-5)+(a+5))^2=(a-5+a+5)^2=(2a)^2=4a^2=4*(-4/9)^2=4*(16/81)=64/81
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Verified answer
=((a-5)+(a+5))^2=(a-5+a+5)^2=(2a)^2=4a^2=4*(-4/9)^2=4*(16/81)=64/81