1.

)x2-15x+54 = 0

Answer»

Explanation : x*x - 15x + 54 = 0 x*x - 6x - 9x + 54 = 0 x(x-6)-9(x-6) = 0 (x-6)(x-9) = 0 x = 6,9

Solution : 6,9

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