CBSE Class 8 Answered
Find the value of x if
(i) 2x = 62 - 42
(ii) 5x = 102 - 52
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Here we use the formula, a2 - b2 = (a + b)(a - b)
(i) 2x = 62 - 42
Taking, a = 6 and b = 4 in above identity, we get
(ii) 5x = 102 - 52
Taking, a = 10 and b = 5 in above identity, we get
Answered by | 04 Jun, 2014, 03:23: PM
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