If a and b are the roots of the equation x^2 +x+ 1=0then a^2+ b^2=
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Suppose two roots are a and b.
so,a+b=-1 & ab=1
so a2 + b2 = (a + b)2 - 2ab= 1-2= -1
so,a+b=-1 & ab=1
so a2 + b2 = (a + b)2 - 2ab= 1-2= -1
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