Class 9 SELINA Solutions Maths Chapter 7 - Indices (Exponents)
Ex. 7(A)
Ex. 7(B)
Ex. 7(C)
Indices (Exponents) Exercise Ex. 7(A)
Solution 1
(i)
(ii)
(iii)
(iv)
(v)
Solution 2
(i)
(ii)
(iii)
(iv)
Solution 3
(i)
(ii)
Solution 4
(i)
(ii)
(iii)
(iv)
Solution 5
Solution 6
Solution 7
(i)
(ii)
Solution 8
Solution 9
Solution 10
(i)
(ii)
Indices (Exponents) Exercise Ex. 7(B)
Solution 1
(i)
(ii)
(iii)
(iv)
Solution 2
(i)
(ii)
(iii)
(iv)
Solution 3
(i)
(ii)
Solution 4
(i)
(ii)
(iii)
Solution 5
Solution 6
Solution 7
(i)
(ii)
Solution 8
Solution 9
Solution 10
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Solution 11
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Solution 12
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Solution 13
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Solution 14 (i)
_SHR_files/20140923150850_image014.gif)
Solution 14 (ii)
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Solution 14 (iii)
_SHR_files/20140923150850_image020.gif)
Solution 14 (iv)
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Solution 14 (v)
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Solution 14 (vi)
9x+2 = 720 + 9x
⇒ 9x+2 - 9x = 720
⇒ 9x (92 - 1) = 720
⇒ 9x (81 - 1) = 720
⇒ 9x (80) = 720
⇒ 9x = 9
⇒ 9x = 91
⇒ x = 1
Indices (Exponents) Exercise Ex. 7(C)
Solution 1
Solution 2
Solution 3
Solution 4
Solution 5
Solution 6
Solution 7
Solution 8
Solution 9
Solution 10
Solution 11
Solution 12
Solution 13
Solution 14
Solution 15 (i)
Solution 15 (ii)
Solution 16
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