Quadratic Equations
New Zealand
Level 7 - NCEA Level 2
Discriminant of a quadratic
Interactive practice questions
Below is the result after using the quadratic formula to solve an equation.
$x=\frac{10\pm\sqrt{-1}}{8}$x=10±√−18
The equation has two real solutions.
A
The equation has one real solution.
B
The equation has no real solution.
C
Easy
< 1min
How many real solutions are there to the equation $x^2=9$x2=9?
Easy
< 1min
How many real solutions are there to the equation $\left(x-7\right)^2=0$(x−7)2=0?
Easy
< 1min
How many real solutions are there to the equation $\left(x-6\right)^2=-2$(x−6)2=−2?
Easy
< 1min
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