The roots of a quadratic equation in x, are -m and 2n. Fine equation.
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x2 - x(2n-m) – 2mn = 0
- x2 + x(2n - m) - 2mn = 0
- x2 + x(m - 2n) + 2mn = 0
- X2 + x (m + 2n ) + 2mn = 0
- x2 - x (m - 2n) - 2mn = 0