m^2+11n-mn-11m
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m^2+11n-mn-11m
9-a^2-b^2-2ab
1/2x^2+2xy+2y^2
9-a^2-b^2-2ab
1/2x^2+2xy+2y^2
m² + 11n - mn - 11m
= (m² - mn) - (11m - 11n)
= m(m - n) - 11(m - n)
= (m - n)(m - 11)
9 - a² - b² - 2ab
= 9 - (a² + b² + 2ab)
= 9 - (a + b)²
= (3 + a + b)(3 - a - b)
1/2x² + 2xy + 2y²
= 1/2 (x² + 4xy + 4y²)
= 1/2 (x + 2y)²
= (m² - mn) - (11m - 11n)
= m(m - n) - 11(m - n)
= (m - n)(m - 11)
9 - a² - b² - 2ab
= 9 - (a² + b² + 2ab)
= 9 - (a + b)²
= (3 + a + b)(3 - a - b)
1/2x² + 2xy + 2y²
= 1/2 (x² + 4xy + 4y²)
= 1/2 (x + 2y)²
化简:n-mn-3(-mn-n)-(-m)-11
因式分解: m(m-2n)+n(2mn-m^2)
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m-n分之m - m+n分之n + m²-n²分之2mn
化简m/m-n-n/m+n+mn/m^-n^
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