1. x in 5x3 + 7x5   binomial   variable   constant   coefficient   Hint Half-n-half Clue   2. 16 in 16xy2z   binomial   monomial   coefficient   trinomial   Half-n-half Clue   3. 8x4 + 5x3 + 3x2 + 16 = 0   linear equation   quartic equation   quadratic equation   cubic equation   Half-n-half Clue   4. x3 + y4 + z5   trinomial   binomial   monomial   inequality   Half-n-half Clue   5. 4x2 + 5x + 7 = 0   cubic equation   quartic equation   linear equation   quadratic equation   Half-n-half Clue   6. 25x2y4 and 3x4y2   inequalities   coefficients   unlike terms   like terms   Half-n-half Clue   7. 21x2y3   binomial   monomial   coefficient   trinomial   Half-n-half Clue