Form the quadratic equation whose roots are 3 and −7.
Quadratic Equations
Original Khojo Papers practice question — not from a past board paper.
x = 1 ± (√2/2)i
No citable source has been recorded for this record. Treat it as practice material, not as fact.
The discriminant is 16 − 24 = −8, so x = (4 ± 2√2 i)/4 = 1 ± (√2/2)i.
From the same topic and chapter, at a similar level.
Form the quadratic equation whose roots are 3 and −7.
Quadratic Equations
If α and β are the roots of 3x2 − 6x + 2 = 0, find 1/α + 1/β.
Quadratic Equations
Solve the equation x2 + 4 = 0 over the complex numbers.
Quadratic Equations
If α and β are the roots of x2 − 5x + 6 = 0, find α2 + β2.
Quadratic Equations
Solve x2 − 2x + 5 = 0.
Quadratic Equations
In a class of 60 students, 35 play cricket, 28 play football and 12 play both. How many play neither?
Sets