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iGCSE (2021 Edition)

5.05 Cubic equations and inequalities

Interactive practice questions

Solve the following equation:

$x^3-125=0$x3125=0

Easy
Less than a minute
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In this question we will be investigating the number of real solutions to the equation $x^3-512=0$x3512=0.

Solve the following equation:

$3x^3=5x^2$3x3=5x2

Solve the equation $x^3=-8$x3=8.

Outcomes

0606C3.5

Solve cubic inequalities in the form k(x – a)(x – b)(x – c) ⩽ d graphically.

0606C5.3

Solve cubic equations.

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