(i) 5x^{2} + 3 × ax = 5x^{2} + 3ax
∴ The number of terms in this polynomial = 2
(ii) ax ÷ 4 – 7 = (ax/4) – 7
∴ The number of terms in this polynomial = 2
(iii) ax – by + y × z = ax – by + yz
∴ The number of terms in this polynomial = 3
(iv) 23 + a × b ÷ 2 = 23 + (ab/2)
∴ The number of terms in this polynomial = 2