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Quadratic Equations MCQs

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1. The standard form of a quadratic equation is:





2. The roots of the equation x²+4x–21=0 are:





3. To make x²–5x a complete square we should add:





4. The factors of x²–7x+12=0 are:





5. The quadratic formula is:





6. A second degree equation is known as:





7. Factors of x³–1 are:





8. To make 49x²+5x a complete square we must add:





9. lx²+mx+n=0 will be a pure quadratic equation if:





10. If the discriminant b²–4ac is negative, the roots are:





11. If the discriminant b²–4ac is a perfect square, its roots will be:





12. The product of roots of 2x²–3x–5=0 is:





13. The sum of roots of 2x²–3x–5=0 is:





14. If 2 and –5 are the roots, then the equation is:





15. If ±3 are the roots, then the equation is:





16. If S is sum and P is product of roots, then equation is:





17. Roots of x²+x–1=0 are:





18. If the discriminant is zero, then roots are:





19. Sum of roots of ax²–bx+c=0 is:





20. Product of roots of ax²+bx–c=0 is:





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