Find the value of x if

(i) 2x = 62 - 42

(ii) 5x = 102 - 52

Asked by Topperlearning User | 4th 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  | 4th Jun, 2014, 03:23: PM