Mathematics
Grade6
Easy

Question

Are y2 and 1y2  equivalent expressions?

  1. Yes
  2. No
  3. Either Yes or No
  4. None of the 

hintHint:

We are given two algebraic expressions. An algebraic expression can consist of a variable and a constant. We are asked to find if the equivalent expressions. For equivalent expressions, we have to rearrange the expression without changing the value of the expression.

The correct answer is: Yes


    The given expressions are yand 1y2.
    We are asked if the above expressions are equivalent or not.
    The conditions necessary for the equations to be equivalent are:
    1) Same variable.
    2) Same coefficient of the given variable.
    3) If there are more than two terms, all of them must be identical.
    4) There must be same sign between the terms as the other equation.
    5) The variable must have same power.
    6) Rearranging the equation without changing the values should result in the same expression.
    Now let’s consider the above expressions.
    They both have the same variable. None of the equation can be solved or simplified further.
    Let’s see the first expression. The coefficient is not shown, it means the coefficient is 1. And the variable is raised to power 2.
    The second expression has a coefficient 1. And the variable has a power 2.
    So both are identical.
    So we can say that the above expressions follow the necessary conditions to be equivalent expressions.
    So the answer is ‘Yes’.

    We have to be careful about the powers of the variables.

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