Free Study Material For RRB Examination: Mathematics (Indices and Surds)

Free Study Material For RRB Examination

Subject : Mathematics (Indices and Surds)

Indices

In the expression xⁿ, n is called the exponent or index and x is called the base and xⁿ is read as ‘x to the power of n’ or ‘x raised to the power n’.

eg,

1. 3⁶ = 3 × 3 × 3 × 3 × 3 × 3 = 729
4³ = 4 × 4 × 4 = 64

The expression (x^m)ⁿ is read as ‘x raised to the power m whole raised to the power n’.

2. (2⁴)³ = (16)³ = 2¹²

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