We can factorize mn:
mn = 225 × 340 = (25)5 × (38)5 = 325 × 65615
Comparing the exponents, we can see that m = 32 × 6561 = 209952 and n = 5.
Therefore, m - n = 209952 - 5 = 209947.
Using laws of exponents, simplify and write the answer in exponential form:
(i) 32 × 34 × 38 (ii) 615 ÷ 610 (iii) a3 × a2 (iv) 7x×72 (v) (52) ÷ 53 (vi) 25 × 55 (vii) a4 × b4 (viii) (34)3(ix) (220 ÷ 215)×23 (x) 8t ÷ 82