=625с4-50в2 с2+ в4
Сразу ответ
((5c-b) × (5c+b))^2=(25 c ^2-b^2)^2=625 c ^4-50 b^2 c^2 +b ^4
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=625с4-50в2 с2+ в4
Сразу ответ
((5c-b) × (5c+b))^2=(25 c ^2-b^2)^2=625 c ^4-50 b^2 c^2 +b ^4