Chứng minh rằng a^4+b^4+(a+b)^4=c^4+d^4+(c+d)^4
Cho \(a^2+b^2+(a+b)^2=c^2+d^2+(c+d)^2 \)
CMR: \(a^4+b^4+(a+b)^4=c^4+d^4+(c+d)^4\)
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Toán lớp 9
Chứng minh rằng a^4+b^4+(a+b)^4=c^4+d^4+(c+d)^4
Cho \(a^2+b^2+(a+b)^2=c^2+d^2+(c+d)^2 \)
CMR: \(a^4+b^4+(a+b)^4=c^4+d^4+(c+d)^4\)
