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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