What is the Coefficient of x mean?
A coefficient is any constant or numerical term that is in front of one or more variables and is defined as a fixed number that is multiplied by a variable. For example, in the expression 3x+2y+4, 3 is the coefficient of x, 2 is the coefficient of y but 4 is not a coefficient, as it is not being multiplied by a variable.
How do you find the coefficient of x?
To find the coefficient of x, we can encircle it or underline it. Then, take everything else except for x, i.e. 5y. So, the coefficient of x in the term 5xy is 5y. Similarly, the coefficient of y in the term 5xy is 5x.
Solving it with Binomial Theorem
(2.x+3)² = (2x+3)(2x+3)
2x(2x+3)+3(2x+3)=
2x(2x+3)+3(2x+3)=
4x²+6x+3(2x+3)=
4x²+12x+9
so if your using the binomial theorem it would equal 4x²+12x+9
if you just want the coefficient of x that would be 4 ↑