Question

e=[x:xis an integral positive root of the equatio x^2 -2x -15=0] represent in roaster form?​

Answer 1

Answer:

x^2-2x-15=0

x^2-5x+3x-15=0

x(x-5)+3(x-5)=0

(x+3)(x-5)=0

x=-3,x=5