When multiplying monomials, the exponent rules depends on its placement. For example, (3x)^2 would be 9(x^2). However, 3x^2 is simply 3(x^2). (xy)^2 means you have to use the F.O.I.L. method, meaning x*x + x*y + y*y, or x^2 + xy + y^2.
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Yes, monomials can have negative exponents. When a monomial has a negative exponent, it means that the variable or variables in the monomial are in the denominator of the fraction. For example, x^(-2) is equivalent to 1/x^2. Negative exponents indicate that the variable should be moved to the opposite side of the fraction line and the exponent becomes positive.
Example: (4x)-2 The answer to this would be 1/ 16x2. Multiply it out as if the negative exponent was not there ((4x)2), then that will be the denominator of the fraction. The numerator is one.
You are multiplying 4 three times so 4^3
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A monomial is a product of positive integer powers of a fixed set of variables. Monomials were invented by Austrian mathematician Bruno Buchberger.