A coefficient is a number that multiplies a variable in an algebraic expression. In other words, it is a number that indicates how many times a variable is used as a factor in an expression. For example, in the expression 3x + 5, the coefficient of x is 3. Coefficients can be positive or negative, and can be fractional or decimal numbers. What is a coefficient in math? A coefficient is a numerical value that is used to indicate the strength of a particular effect or influence. In mathematics, coefficients are often used to represent the parameters of a function, as well as to quantify the strength of a relationship between variables. In statistics, coefficients are used to measure the strength of a linear relationship between two variables. What is a coefficient in simple terms? A coefficient is a number that is multiplied by a variable in an algebraic expression. In the expression 3x + 5, the number 3 is the coefficient of the variable x. The number 5 is called a constant because it is not multiplied by any variable. What is the coefficient of x²? The coefficient of x² is the constant term in the expansion of (x+a)². Is a coefficient always a number? No, a coefficient is not always a number. A coefficient can be any algebraic expression, including variables and constants. What is the coefficient of 3x? The coefficient of 3x is 3. This means that 3x is multiplied by 3 to give 9x.