Can you guys help me with this what is the answer

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

When are triangles considered similar? a. corresponding angles are equal andcorresponding sides are proportionalb. corresponding angles are proportional andcorresponding sides are equalc. corresponding angles are equal orcorresponding sides are proportionald. corresponding angles are proportional orcorresponding sides are equal select the best answer from the choices providedmark this and retumsave and exitnext

Solve the equation for b: a= (1/2)(b)(h)