1. If f (x) = 4x2 + 2x a) Find f (x) = 4 . 22 + 2 . 2 = 20 b) Find f (x + h) = 4(x + h)2 + 2(x + h) = 4(x2 + 2xh + h2)+2x+ 2h = 4x2 + 8xh + 4h2+ 2x + 2h 2. When adding/subtracting fractions, to combine them, we need to get a common denominator 3. Consider 6xth and 2 xth-1 xth a) What is the least common denominator? ( x + h - 1) (x + h) b) Use the least common denominator to fill in the blanks and complete the task