If the sum of two numbers is 50 and the difference is 4, what are the two numbers

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Is a positive integer raised to a negative power always positive

What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)