1. 2x2y + 7xy4   binomial   monomial   inequality   trinomial   Hint Half-n-half Clue   2. 5x2y4 and 23x2y4   coefficients   unlike terms   variables   like terms   Half-n-half Clue   3. 25x2y4 and 3x4y2   coefficients   unlike terms   inequalities   like terms   Half-n-half Clue   4. 4x2 + 5x + 7 = 0   quartic equation   quadratic equation   linear equation   cubic equation   Half-n-half Clue   5. 5 in 7x5   coefficient   cube   exponent   square   Half-n-half Clue   6. 8y + 3 = 10y + 1   quartic equation   cubic equation   quadratic equation   linear equation   Half-n-half Clue   7. 16 in 16xy2z   trinomial   coefficient   monomial   binomial   Half-n-half Clue