Factor completely x^2n+10x^n+16

Factor the monomial completely 42a3b3

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers