Question 389038
 Write the expression  {{{9x^2-9x+1}}} in the form of {{{a(x+b)^2+c}}}. where a, b and c are real numbers
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{{{9x^2-9x+1}}}
= {{{9(x^2 - x) + 1}}}
= {{{9(x^2 - x + 1/4) + 1 - 9/4}}}
= {{{9(x - 1/2)^2 - 5/4}}}