Объяснение:
Х^2+(4-х)(4+х)=5х
Х^2+(16-х^2)=5х
Х^2+16-х^2=5х
16=5х
Х=16:5
Х=3,2
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Verified answer
Объяснение:
Х^2+(4-х)(4+х)=5х
Х^2+(16-х^2)=5х
Х^2+16-х^2=5х
16=5х
Х=16:5
Х=3,2