Question

$x(18 - x) = 72$
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Answer 1

Answer:

Step-by-step explanation:

18x-x^2=72

=>x^2-18x+72=0

=>x^2-6x-12x+72=0

=>x(x-6)-12(x-6)=0

=>(x-6)(x-12)=0

=>x-6=0 or x-12=0

=>x=6 or 12