human
Solve quadratic equations using factorisation in the form (x + a)(x + b)  The area of the trapezium on the right is \( 40 \mathrm{~cm}^{2} \). ![A trapezium with the parallel sides a and b labelled with x+2 and x+4 and the perpendicular height x.]() Based on the information given, Adam writes this formula:
\(x^{2}+3 x=40\)

What are the two solutions to this equation? \( \begin{array}{c}x=8 \\ \text { and } \\ x=-5\end{array} \)
gpt
Believes the solutions of a quadratic equation are the constants in the factorised form