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МатематикаВопрос:
22) (1/5 m - ...)² = ... - 2/35 m² + ...
Ответ:
The expression is of the form (a-b)², where a=1/5 m and 2ab = 2/35 m². Thus, b=1/7. (1/5 m - 1/7)² = (1/5 m)² - 2(1/5 m)(1/7) + (1/7)² = 1/25 m² - 2/35 m + 1/49. The missing terms are 1/25 m² and 1/49.
Похожие
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- 12) (...-2x)² = ... -12xt+ ...
- 13) (5-... )² = ... -10ab+ ...
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- 19) (6p-...)² = ... -84pn+ ...
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- 23) (4/3 t³ + ...)² = ... + 8/3 t⁵h + ...
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- 26) (1,1bc³ - ...)² = ... + ... -2bc y²
- 27) (... -7kn⁵)² = ... + ... -42kn⁵t¹⁰
- 28) (... - ...)² = a⁶v² - ... +25z¹²
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