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Let f(x)=ax^2-bx+c^2, b != 0 and f(x) !...

Let `f(x)=ax^2-bx+c^2, b != 0` and `f(x) != 0` for all `x ∈ R`. Then (a) `a+c^2 < b` (b) `4a+c^2 > 2b` (c) `a-3b+c^2 < 0` (d) none of these

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CENGAGE PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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  2. Multiply: (2+5i)(4-3i)

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  3. Let f(x)=ax^2-bx+c^2, b != 0 and f(x) != 0 for all x ∈ R. Then (a) ...

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  4. It is given that n is an odd integer greater than 3 but n is not a mul...

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  5. If a ,b in R ,a!=0 and the quadratic equation a x^2-b x+1=0 has imagi...

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  6. Find the complex number omega satisfying the equation z^3=8i and lyi...

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  7. If the expression [m x-1+(1//x)] is non-negative for all positive real...

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  8. When the polynomial 5x^3+M x+N is divided by x^2+x+1, the remainder is...

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  10. ifomegaa n domega^2 are the nonreal cube roots of unity and [1//(a+ome...

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  14. If z1, z2, z3 are three nonzero complex numbers such that z3=(1-lambda...

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  20. Solve for z : z^2-(3-2i)z=(5i-5)dot

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