Question

Which of the given statements is not true?

• A. Like terms can be added.
• B. Unlike terms can be subracted.
• C. Terms make up an algebraic expression.
• D. The value of a constant is always fixed.

Answer 1

The correct option is B Unlike terms can be subracted.

A term is the name given to a number, a variable or a combination of both. Terms along with mathematcal operator(s) make up algebraic expression.
For example, in the expression x+10, x and 10 are its terms which are separated by mathematical operator '+'.

An entity whose value remains fixed is called a constant.
For example, 5 is a constant since its value is always fixed.

Like terms are the terms which have same variables with same exponents. Such terms can be added or subtracted.

If the terms have different variables or same variables with different exponents, then such terms are called unlike terms. Unlike terms cannot be added or subtracted.

Hence, option D is correct.