Some simplifications of algebraic expressions are done below. The expression on the right-hand. Class 7

Some simplifications of algebraic expressions are done below. The expression on the right-hand. Class 7

Question 1.

Some simplifications of algebraic expressions are done below. The expression on the right-hand side should be in its simplest form. Class 7

• Observe each of them and see if there is a mistake.

• If you think there is a mistake, try to explain what might have gone wrong.

• Then, simplify it correctly.

Solution:

Question 2.

Take a look at all the corrected simplest forms (i.e., brackets are removed, like terms are added, and terms with only numbers are also added). Is there any relation between the number of terms and the number of letter-numbers these expressions have? Class 7

Solution:

In each of the corrected simplest forms, the number of terms is greater than or equal to the number of letter-numbers. But in the terms having no mistake, there no such relation.