@umkaa0202

umkaa0202

5 - 9 классы

cos9x-cos7x+cos3x-cosx=0...
Answer
!!!!!!!!!!!! 2sin^2(2x)-(cosx+sinx)^2...
Answer
СРОЧНО!!!5,2*(-8,05)+(-4,8)*(-2,5)-(-7,9)*3...
Answer

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