Find the values of m so that the equation (4 + m)x^2 + (m + 1)x + 1 = 0 has equal roots
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b² - 4ac = 0
m² + 2m + 1 - 16 - 4m=0
m² - 2m - 15 = 0
solve this....
m² + 2m + 1 - 16 - 4m=0
m² - 2m - 15 = 0
solve this....
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