Let A and B be 3 times 3 matrices, with det Aequals9 and det Bequalsnegative 4. Use properties of determinants to complete parts (a) through (e) below. a. Compute det AB. det ABequals nothing (Type an integer or a fraction.)

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

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