Which expressions are equivalent to the one below? check all that apply. 21^x/3^xa.(21-3)^xb.7c.7^xd.(21/3)^ xe.7^x*3^x/3^xf.3^x

The equivalent expressions are:

C.

D.

E.

Step-by-step explanation:

We are asked to find the algebraic expression that is equivalent to the expression:

A)

We know that this expression is incorrect.

Since,

B)

7

This option is also incorrect.

Since,

C)

This option is true.

Since,

D)

This option is true.

Since,

E)

This option is correct.

Since,

F)

This option is incorrect.

Since we get a expression as:

but not

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐