Saved Bookmarks
| 1. |
Find the value of ‘?’ in 512 × 125 ÷ 15625 = 3125 × 25?1). 42). 33). 24). 1 |
|
Answer» LAWS of Indices: 1. am × an = a{m + n} 2. am ÷ an = a{m - n} 3. (am )n = amn 4. (a)-m = 1/am 5. (a)m/n = n√am 6. (a)0 = 1 ⇒ 512 × 125 ÷ 15625 = 3125 × 25? ⇒ 512 × 53 ÷ 56 = 55 × (52)? ⇒ 512 + 3 - 6 = 55 + 2? ⇒ 59 = 55 + 2? ⇒ 9 = 5 + 2? ⇒ ? = 4/2 ∴ ? = 2 |
|