5raised to the power x +1-5raise to the power x +1=120
Answers
Answered by
2
Consider, 52x – 1 – (52)x – 1 = 2500 ⇒ 52x – 1 – 52x – 2 = 2500 ⇒ 52x – 1 – (52x – 1)/5 = 2500 → (1) Let 52x – 1 = a Equation (1) becomes, a – a/5 = 2500 ⇒ 4a/5 = 2500⇒ a = (2500 × 5)/4 = 3125 Therefore, 52x – 1 = 3125 ⇒ 52x – 1 = 55 ⇒ 2x – 1 = 5 ⇒ 2x = 6 ∴ x = 3
Similar questions