Simplify and express each of the following in exponential form:
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)
(viii)
(ix)
(x)
(xi)
(xii)
(i) In the above question,
We have to simplify the given numbers into exponential form:
∴ We have,
=
=
=
= (am × an = am + n)
Using identity: (am an = am - n)
= 25 - 5 × 34 – 1
= 2033
= 1 × 33
= 33
(ii) In the above question,
We have to simplify the given numbers into exponential form:
[(52)3 × 54] 57
Using identity: (am)n = amn)
= [(5)2 × 3 × 54] 57
= [(5)6 × 4] 57
Using identity: (am × an = am + n)
= [56 + 4] 57
Using identity: (am an = am - n)
Therefore,
= 510 57
= 510 – 7
= 53
(iii) In the above question,
We have to simplify the given numbers into exponential form:
We have,
254 53
= (5 × 5)4 53
Using identity: (am)n = amn
= 52 × 4 53
= 58 53
Using identity: (am an = am - n)
58 53
= 58 – 3
= 55
(iv) In the above question,
We have to simplify the given numbers into exponential form:
We have,
=
Using identity: (am an = am - n)
= 31 - 1 × 72 – 1 × 118 – 3
= 30 × 71 × 115
= 1 × 7 × 115
= 7 × 115
(v) In the above question,
We have to simplify the given numbers into exponential form:
We have,
Using identity: (am × an = am + n)
=
Using identity (am an = am - n)
= 37 - 7
= 3o
= 1
(vi) In the above question,
We have to simplify the given numbers into exponential form:
∴ We have,
20 + 30 + 40
= 1 + 1 + 1
= 3
(vii) In the above question,
We have to simplify the given numbers into exponential form:
∴ We have,
20 × 30 × 40
= 1 × 1 × 1
= 1
(viii) In the above question,
We have to simplify the given numbers into exponential form:
∴ We have,
(30 + 20) × 50
= (1 + 1) × 1
= 2
(ix) In the above question,
We have to simplify the given numbers into exponential form:
∴ We have,
=
Using identity: (am)n = amn
Using identity: (am an = am - n)
= 28 – 6 × a5 - 3
= 22 × a2
Using identity [am ×bm = (a × b)m]
= (2 × a)2
= (2a)2
(x) In the above question,
We have to simplify the given numbers into exponential form:
∴ We have,
() × a8
Using identity: (am an = am - n)
= a5 – 3 × a8
= a2 × a8
Using identity (am × an = am + n)
= a2 + 8
= a10
(xi) In the above question,
We have to simplify the given numbers into exponential form:
∴ We have,
Using identity: (am an = am - n)
= 45 – 5 × a8 – 5 × b3 – 2
= 40 × a3 × b1
= 1 × a3 × b
= a3b
(xii) In the above question,
We have to simplify the given numbers into exponential form:
∴ We have,
(23 × 2)2
Using identity: (am × an = am + n)
= (23 – 1)2
= (24)2
Using identity: (am)n = amn
Therefore,
= 24 × 2
= 28