Which shows a difference of squares?

10 y squared minus 4 x squared
16 y squared minus x squared
8 x squared minus 40 x + 25
64 x squared minus 48 x + 9

Respuesta :

Answer:

The expression which shows the difference  of squares is [tex](16y)^{2}  - (x)^{2}[/tex] .

Step-by-step explanation:

Here, the given expressions are :

[tex]1. (10y)^{2}  - (4x)^{2}\\2.(16y)^{2}  - (x)^{2}\\3. (8x)^{2}  - (4x + 25)\\4. (64x)^{2}  - (48x + 9)[/tex]

Now, DIFFERENCE of SQUARES is an expression where one perfect square term is subtracted from another perfect square term.

And each difference of square can be expanded using algebraic identity

[tex]a^{2} - b^{2}  = (a-b)(a+b)[/tex]

Now, here only the terms in expression 2 are perfect squares, as

[tex](16y)^{2}  = (4y)^{2} =(-4y)^{2}  , (x)^{2}  = (x)^{2} =(-x)^{2}[/tex]

Hence, the expression which shows the difference  of squares is [tex](16y)^{2}  - (x)^{2}[/tex] .

Also, here[tex](16y)^{2} - (x)^{2}  = (4y-x)(4y+x)[/tex]

Answer:

B. 16y squared-x squared

Step-by-step explanation:

Took the test got a 100%

Good luck:)

Q&A Education