NZ Level 7 (NZC) Level 2 (NCEA)
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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

The equation has two real solutions.

A

The equation has one real solution.

B

The equation has no real solution.

C
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Outcomes

M7-6

Manipulate rational, exponential, and logarithmic algebraic expressions

M7-7

Form and use linear, quadratic, and simple trigonometric equations

91261

Apply algebraic methods in solving problems

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