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If a and b(!=0) are the roots of the eq...

If `a and b(!=0)` are the roots of the equation `x^2+a x+b=0,` then find the least value of `x^2+a x+b(x in R)dot`

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CENGAGE PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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  9. The quadratic polynomial p(x) has the following properties:p(x)geq0 fo...

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  10. If z1=9y^2-4-10ix,z2=8y^2-20i where z1=barz2 then z=x+iy is equal to

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  11. If a rg(z1)=170^0 and arg(z2)=70^0 , then find the principal argument...

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