I need help with this

What is the factor form of x^2-9x+14

Scenario: a rectangular plot of ground is 5 meters longer than it is wide. its area is 20,000 square meters. question: what equation will you find the dimensions? note: let w represent the width. options: w(w+5)=20,000 w^2=20,000+5 (w(w+5))/2=20,000 w+2(w+5)=20,000

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18