Question

Which two expressions are equivalent?
A
B
C Or
D?

Answer 1

`\longrightarrow{\green{D.\:6x\:+\:9x\:and\:3\:(\:2x\:+3x\:) }}` ✔

`\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}`

A.

z + z + z =
`{z}^(3)`

➡ 3z ≠
`{z}^(3)`

➡ L. H. S ≠ R. H. S

Clearly, the two expressions are not equivalent.

B.

13x + 9 - 2x = 15x + 9

➡ 11x + 9 ≠ 15x + 9

➡ L. H. S ≠ R. H. S

The two expressions are not equivalent.

C.

11 x² + 4x + 9 ≠ 15 x² + 9

➡ L. H. S ≠ R. H. S

The two expressions are not equivalent.

`\boxed{D.}`

6x + 9x = 3 ( 2x + 3x )

➡ 3 ( 2x + 3x ) = 3 ( 2x + 3x )

➡ L. H. S = R. H. S

Since L. H. S is equal to R. H. S., the two expressions are equivalent.

`\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{♡}}}}}`

Answer 2

D because it's d and I know it's d