Question

$x { }^{2} - 15x + 54 = 0$
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Answer 1

Answer:

x = 6 , 9

Step-by-step explanation:

x²-15x+54 = 0

=> x²-(6+9)x+54 = 0

=> x²-6x-9x+54 = 0

=> x(x-6)-9(x-6) = 0

=> (x-6)(x-9) = 0

=> x-6 = 0 => x-9 = 0

=> x = 6 => x = 9