Question

A and B can do a job in one and half days a and c can do it in 2 days and B and C in 3 days how long would all three takes to complete the job if they work together how long would it take to complete the job​

Answer 1

Answer:

(x+3)2

=(x+3)(x+3)

=(x)(x)+(x)(3)+(3)(x)+(3)(3)

=x2+3x+3x+9

=x2+6x+9