1.

n^2 %2B 20*n %2B 75

Answer»

give me answer

x^2 + 20x + 75 = 0x^2 + 15x + 5x + 75 = 0x(x + 15) + 5(x + 15) = 0(x + 5)(x + 15) = 0x = - 5, - 15



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