Problem
ALG-B1-M03-P001 Quadratic Without the Discriminant
#1
★☆☆☆☆ Level 1 of 5
Solve \(x^2-9x+20=0\).
Find two numbers with sum \(9\) and product \(20\).
\(x^2-9x+20=(x-4)(x-5)\). Hence \(x=4\) or \(x=5\).
Introductory exercise on factoring a quadratic equation.