(x-4) is the geometric mean of (x-5) & (x-2) find value of x
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(x-4)^2=ab
x^2-8x+16=x^2-7x+10
-8x+16-10=-7x
x=6
x^2-8x+16=x^2-7x+10
-8x+16-10=-7x
x=6
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