Question

Identify the term, their coefficients for the following expression:

9 − ab + bc − ca

Answer 1

Definitions:
A term in an algebraic expression can be a constant, a variable or a product of constants and variables separated by the signs of addition (+) or subtraction (\[-\] ) . Examples: 27, x, xyz, \[\frac{1}{2} x^2 yz\] etc.
The number factor of the term is called its coefficient.

The expression 

\[9 - ab + bc - ca\] consists of four terms —  \[9, - \text { ab, bc and - ca }\]

The coefficient of the term 9 is 9.

The coefficient of \[- ab\] is \[-\]1.

The coefficient of  \[bc\] is 1, and the coefficient of \[- ca\] is  \[-\]1.