are the expressions 8x^2 + 3(x^2 + y) and 7x^2 + 7y + 4x^2 - 4y equivalent?

Answer 1

Yes.

8 x ^ 2 + 3 ( x ^ 2 + y ) =

8 x ^ 2 + 3 * x ^ 2 + 3 * y =

8 x ^ 2 + 3 x ^ 2 + 3 y =

11 x ^ 2 + 3 y

7 x ^ 2 + 7 y + 4 x ^ 2 - 4 y =

7 x ^ 2 + 4 x ^ 2 + 7 y - 4 y =

11 x ^ 2 + 3 y

Answer 2

thank you!