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The answer is b²/a²

  • A number's power indicates how many times that number must be used in  multiplication. Powers are also called exponents or indices. For example, 8^2 means "8 squared", "8 squared", or simply "8 squared".

  • Fundamentally, a power is an expression that indicates repeated multiplication of the same number or factor. The exponent value  is based on the number of times the base is multiplied by itself.

  • For example 8 x 8 x 8 x 8 x …..n times = 8. The above expression, 8n, is said as 8 raised to the power n. Therefore, exponents are also called power or sometimes indices.

a⁷ b² a⁻⁹

= a⁽⁷⁻⁹⁾ b²

= a⁻² b²

= b² / a²

The answer is b²/a²

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