CAIE IGCSE Mathematics Quadratic Equations

Review CAIE IGCSE Mathematics quadratic equations through factorisation, the quadratic formula, completed-square ideas and applied contexts.

Exam points

solve quadratics by factorisation, including zero-product equations and roots
use the quadratic formula with discriminants and round solutions to required accuracy
form quadratic equations from area, interest, speed or number contexts before solving

[Maximum number: 3]

Solve by factorisation.
$4x^2+8x-5=0$ $x=\qquad$ or $x=\qquad$

(2x-1)(2x+5)=0 oe
B2
$x=\frac12$ and $x=-\frac52$
B1

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