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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 ENGLISH-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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  2. If (x+i y)(p+i q)=(x^2+y^2)i , prove that x=q ,y=pdot

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  8. For |z-1|=1, show that tan{[a r g(z-1)]/2}-((2i)/z)=-i

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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=overline z2, then find z=x+i...

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  15. If a is a complex number such that |a|=1, then find the value of a, s...

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  16. If x^2+p x+1 is a factor of the expression a x^3+b x+c , then a^2-c^2=...

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