4
Mathematics
Quadratic Equations
583+ practice questions available
Sample Practice Questions
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1
Medium
The discriminant of the equation 3x² - 2x + 1 = 0 is:
A-8
B8
C16
D-16
2
Medium
For what values of k does the equation 2x^2 + kx + 8 = 0 have equal roots?
Ak = +/-8
Bk = +/-4
Ck = +/-16
Dk = 8 only
3
Hard
The hypotenuse of a right triangle is 13 cm. If one of the other sides is 7 cm more than the remaining side, the sides of the triangle are:
A5 cm, 12 cm, 13 cm
B3 cm, 10 cm, 13 cm
C4 cm, 11 cm, 13 cm
D6 cm, 13 cm, 13 cm
4
Easy
The discriminant of \(3x^2 - 2x + 1/3 = 0\) is:
A0
B1
C4
D-4
5
Medium
Find the roots of the quadratic equation \(3x^2 - 5x + 2 = 0\) by factorisation.
A1, 2/3
B-1, -2/3
C1, -2/3
D2, 1/3
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