simplify and write in exponential form: (i)82+23(ii)254+53(iii)28×a543×a3(iv)23×34×43×32

simplify and write in exponential form: $(i) 8^{2} + 2^{3} (i i) 25^{4} + 5^{3} (i i i) \frac{2^{8} \times a^{5}}{4^{3} \times a^{3}} (i v) \frac{2^{3} \times 3^{4} \times 4}{3 \times 32}$

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