+23254 A negative exponent on a number or variable in a fraction can be turned into a positive exponent if you move the factor from the numerator to the denominator (or from the denominator to the numerator).
For instance: y^-3 can be written as 1 / y^3 (this places the y³ in the numerator) and 1 / x^-2 can be written as x^2 / 1 , or simply as x² (this places the x² in the denominator) so the problem can be written (with positive exponents only) as:
(5·x²·x²·z) / (y³·y) = 5x^4z / y^4
+23254 A negative exponent on a number or variable in a fraction can be turned into a positive exponent if you move the factor from the numerator to the denominator (or from the denominator to the numerator).
For instance: y^-3 can be written as 1 / y^3 (this places the y³ in the numerator) and 1 / x^-2 can be written as x^2 / 1 , or simply as x² (this places the x² in the denominator) so the problem can be written (with positive exponents only) as:
(5·x²·x²·z) / (y³·y) = 5x^4z / y^4
