Find the largest prime factor of $309^2 - 147^2.$

1/800 is the right answer

the answers are in the images, i received 100% on this assignment. hope this !

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft