human
Solve quadratic equations using factorisation in the form x(x + b)  Jo and Paul are arguing about how to solve this equation:
\(
x^{2}-9 x=0
\)

Jo says one solution is \( x=0 \)

Paul says one solution is \( x=3 \)
Who is correct? Only
Paul
gpt
Thinks x^2 - a^2x is a valid form of difference of two squares