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  • Brainly User
2015-03-16T12:13:02+05:30

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Negative exponents invert the fraction and the exponent will be positive:

(1 / a + 1 / b) ² -> the square is still negative, then inverted once more fractions.
however, should now reverse all fraction, since it is all high within 2

1-----------(1 / a + 1 / b) ²
taking notable products are:
1----------(1 / a² + 2 / + 1 ab / b²)
taking MMC in the denominator:
1----------------- -> Multiply the 1st fraction byb² + ab + 2nd of reverse a²----------------a²b²

a²b²-----------b² + 2ab + a² -> or: a²b² / (b + a) ²
1 5 1