Answer:
Option 1,2 and 5 represent a perfect square monomial and its square root.
Step-by-step explanation:
To find : Which expressions represent a perfect square monomial and its square root? Check all that apply.
Solution :
1) 121, 11
As [tex](11)^2=121[/tex]
This expression represents a perfect square monomial and it’s square root.
2) [tex]4x^2,2x[/tex]
As [tex](2x)^2=4x^2[/tex]
This expression represents a perfect square monomial and it’s square root.
3) [tex]9x^2-1,3x-1[/tex]
As [tex](3x-1)^2=9x^2+1-6x[/tex]
This expression does not represents a perfect square monomial and it’s square root.
4) [tex]25x,5x[/tex]
As [tex](5x)^2=25x^2[/tex]
This expression does not represents a perfect square monomial and it’s square root.
5) [tex]49x^4,7x^2[/tex]
As [tex](7x^2)^2=49x^4[/tex]
This expression represents a perfect square monomial and it’s square root.
Therefore, Option 1,2 and 5 represent a perfect square monomial and its square root.
