Chapter 10: Algebraic Expressions

Solution:-

True.

The terms having the same algebraic factors are called like terms.

Solution:-

False.

Consider the given expression, x + y + 5x

The expression contains like terms, x + 5x = 6x

Then, the given expression becomes y + 6x which is a binomial.

Solution:-

False.

-4 is the numerical coefficient of q² in – 4pq².

Solution:-

True.

The terms having different algebraic factors are called unlike terms.

Solution:-

False.

Sum of x² + x and y + y²

= (x² + x) + (y + y²)

= x² + y² + x + y

Solution:-

True.

Additive inverse of the expression is same as the subtracting term.

Solution:-

False.

We know that, total number of planets is constant. Hence, we cannot denote planets in variables.

Solution:-

False.

The terms having the same algebraic factors are called like terms. Numerical of the coefficient can be vary.

Solution:-

False.

If we add a monomial and binomial, then answer can be a monomial.

For example: sum of y² and –y² + x²

= y² + (-y² + x²)

= y² – y² + x²

= x²

Solution:-

False.

If we subtract a monomial from a binomial, then answer is at least a monomial.

For example: difference of y² and y² + x²

= y² – (y² + x²)

= y² – y² – x²

= – x²