State true or false and give reasons for your answer.i) 7x2 and 2x ar

1.	State true or false and give reasons for your answer.i) 7x2 and 2x are unlike terms.ii) pq2 and – 4pq2 are like terms.iii) xy, – 12x2y and 5xy2 are like terms.
Answer» i) 7x² and 2x are unlike terms is true. Since the power of the variable x is not same in both the terms. ii) pq² and – 4pq² are like terms is true. Since both the terms are having same variables and same exponents. iii) xy, -12x²y and 5xy² are like terms is false. Since all the terms are not contains same exponents.

State true or false and give reasons for your answer.i) 7x2 and 2x are unlike terms.ii) pq2 and – 4pq2 are like terms.iii) xy, – 12x2y and 5xy2 are like terms.

Answer»

i) 7x² and 2x are unlike terms is true. Since the power of the variable x is not same in both the terms.

ii) pq² and – 4pq² are like terms is true. Since both the terms are having same variables and same exponents.

iii) xy, -12x²y and 5xy² are like terms is false. Since all the terms are not contains same exponents.