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Leyla2003
@Leyla2003
June 2022
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Номер 15. Помогите, пожалуйста.
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12500
А) 36 а^2 - b^2 = (6a-b) (6a+b)
г) 25n^2 - x^2 = (5n-x) (5n+x)
ж) 81a^2 - 49 = (9a - 7) (9a+7)
й) 0.01n^2 - 9m^2 = (0.1n -3m) (0.1n +3m)
б) 16 m^2 -9n^2 = (4m -3n) (4m+3n)
д) 64 x^2 - 121y^2 = (8x-11y) (8x+11y)
з) 144 b^2 - 49 m^2 = (12 b -7m) (12b+7m)
к) 0.09 x^2 - 0.49 y^2 = (0.3 x-0.7y) (0.3x-0.7y)
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Answers & Comments
г) 25n^2 - x^2 = (5n-x) (5n+x)
ж) 81a^2 - 49 = (9a - 7) (9a+7)
й) 0.01n^2 - 9m^2 = (0.1n -3m) (0.1n +3m)
б) 16 m^2 -9n^2 = (4m -3n) (4m+3n)
д) 64 x^2 - 121y^2 = (8x-11y) (8x+11y)
з) 144 b^2 - 49 m^2 = (12 b -7m) (12b+7m)
к) 0.09 x^2 - 0.49 y^2 = (0.3 x-0.7y) (0.3x-0.7y)