Ответ:(m+n)(m-n) = m² - mn + mn - n² = m² - n²
(a+x)² = (a+x)(a+x) = a² + ax + ax + x² = a² + 2ax + x²
Объяснение:
(m+n)(m-n) = m² - mn + mn - n² = m² - n²
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Ответ:(m+n)(m-n) = m² - mn + mn - n² = m² - n²
(a+x)² = (a+x)(a+x) = a² + ax + ax + x² = a² + 2ax + x²
Объяснение:
(m+n)(m-n) = m² - mn + mn - n² = m² - n²
(a+x)² = (a+x)(a+x) = a² + ax + ax + x² = a² + 2ax + x²