The exponent of b is (-2)x 1/2x4=-4.

The exponential power of rational number, the algorithm should be remembered.

The base of an index is constant, and the same base is multiplied and divided.

The base of exponential multiplication is constant, and the power of power should be clear.

The product quotient is multiplied by the original exponent, and then multiplied by the power divided by the base.

The zeroth power of a nonzero number, with a constant value of 1.

Exponential power of negative integer, reciprocal of positive exponent.

When you see the exponential power of a fraction, you feel that the base must be non-negative.

Power exponent is numerator, and root exponent should be denominator.

When you see the exponential power of a fraction, you feel that the base must be non-negative.

Power exponent is numerator, and root exponent should be denominator.