Whenever we are dealing with rational fractions.
We use the denominator below the numerator.
we had to do math that is denominator
Either: when given a fraction with a surd as the denominator, rationalising the denominator; Or, when given a fraction with a complex denominator, to make the denominator real.
Not necessarily. The denominator need not have any real zeros, for example x2+1. Not necessarily. The denominator need not have any real zeros, for example x2+1. Not necessarily. The denominator need not have any real zeros, for example x2+1. Not necessarily. The denominator need not have any real zeros, for example x2+1.
When reducing fractions to their simplest form the greatest common factor of their numerator and denominator must be found.
Unless you are an electrical engineer or a math teacher, every number you will ever use in a real world situation will be a real number.
Well, since there is no such thing as a sphare in the real world, it is a bit hard to tell what it can or cannot use.
Use the rules of division for complex numbers. Just divide 1 / (4 + 3i). This requires multiplying numerator and denominator of this fraction by (4 - 3i), to get a real number in the denominator.
In the real world, denominators are used in various contexts, such as in calculating averages, ratios, and probabilities. For example, when determining the average score of a class, the total score is divided by the number of students, where the number of students serves as the denominator. Denominators are also essential in financial calculations, like determining interest rates or comparing prices, helping to provide a clearer understanding of relative values. Overall, they help quantify relationships between quantities in everyday situations.
All fractions (with whole numbers in the numerator and the denominator - zero in the denominator is not allowed) are rational numbers, and therefore also real numbers.
use a absolute value to represent a negative number in the real world
In a fraction, the numerator represent the part out of the denominator which represents the total. Neither need be rational (or even real).