Question 163897
{{{(b+1/3)(b+1/4)}}}

Multiplying polynomials is basically using each term in the first polynomial multiply each term in the second polynomial:

= {{{b*b+b*(1/4)+(1/3)*b+(1/3)*(1/4)}}}

={{{b^2 + (1/4)b+(1/3)b+(1/12)}}}

={{{b^2 + (7/12)b+ (1/12)}}}