Solve the following equation by factorisation.
x²- 54x + 15 = 0
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Given x
2
−15x+54=0
⇒x
2
−6x−9x+54=0
⇒x(x−6)−9(x−6)=0
⇒(x−9)(x−6)=0
⇒x=9,6
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