Please answer quickly! 50.1+70.12=?

Restrictions on f(x) = 1/x+5 and g(x) = x-2

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares