If you mean: 9x squared+6x+1 = 0 then x = -1/3 and x = -1/3 therefore the quadratic equation has equal roots
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Equation would be 9x2-1=0 Thus: 9x2=1 x2=1/9 x= square root of 1/9 Therefore: x=1/3
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x squared +6x +5 is a quadratic expression that can be factored as (x+1)(x+5)
6(x-1) 2x3(x-1)