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If the equation m2x2 + (2m + 1) x + 1 = 0 of X has real roots, then the value range of M is () A. M ≥ − 14b. M ≥ − 14 and m ≠ 0C. M ≥ − 12D. M ≥ − 12 and m ≠ 0
When m = 0, the original equation can be reduced to x + 1 = 0, and the solution is x = - 1; when m ≠ 0, the equation m2x2 + (2m + 1) x + 1 = 0 about X has a real root, and the solution is m ≥ - 14, and the value range of M is m ≥ - 14
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