What are coefficients?

1 Answer

Coefficients are the numbers in front of variables.


In the term #2x#, 2 is the coefficient
In #4x^5#, the coefficient is the number 4
In the case where the term is given as a single letter, for example, #y#, the coefficient of the unknown is 1.

Let's take a more complex term, for example the quadratic equation

#x^2 + #9x + 20

the coefficient would be 9, and the solution would be:

(#x + 4)(#x + 5)

as the two numbers 4 and 5 add to get the first number, in this case, 9, and multiply to give the second term, in this case, 20.