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Show that the equation x^2+a x-4=0 ha...

Show that the equation `x^2+a x-4=0` has real and distinct roots for all real values of `a` .

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RD SHARMA ENGLISH-QUADRATIC EQUATIONS-All Questions
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  3. Show that the equation x^2+a x-4=0 has real and distinct roots f...

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  10. Determine the nature of the roots of the following quadratic equatio...

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  11. Determine the nature of the roots of the following quadratic equatio...

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  12. Determine the nature of the roots of the following quadratic equatio...

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  13. Find the values of k for which the roots are real and equal in the...

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  14. Find the values of k for which the roots are real and equal in the...

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  15. Find the values of k for which the roots are real and equal in the...

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  16. Find the values of k for which the roots are real and equal in the...

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  17. Find the values of k for which the roots are real and equal in the...

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  18. Find the values of k for which the roots are real and equal in the...

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  19. Find the values of k for which (k+1)x^2-2(3k+1)x+8k+1=0 has rea...

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