Respuesta :

Answer:

5s^2 - 30st - 7t^2

Step-by-step explanation:

Answer and Step-by-step explanation:

Distribute the s, then distribute the t, then finally simplify.

[tex]5s^2 - 7st\\5st - 7t^2\\\\5s^2 - 7st + 5st - 7t^2\\\\5s^2 - 2ts = 7t^2[/tex]<-- This is the answer.

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