Question

a father and his son can complete a piece of work in 4 days, while the father alone can complete it in 6 days both of them work for 2 days then the father had to leave how long will the son take to complete the remaining work​

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

Answer 2

Answer:

(x+3)2

=(x+3)(x+3)

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

=x2+3x+3x+9

=x2+6x+9