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37 votes
37 votes
7st + 4t(s + t + 4) - 9t

User SahalMoidu
by
3.1k points

2 Answers

15 votes
15 votes

Answer: 11st + 4t² + 7t

Explanation:

Expand 4t(s + t + 4) into: 4st + 4t² + 16t

7st +4st + 4t² +16t - 9t

Add and subtract to get your answer

User Ytsejammer
by
3.2k points
11 votes
11 votes

Answer:

11ts + 4t^2 + 7t

Explanation:

7st + 4t(s + t + 4) - 9t

= 7st + 4ts + 4t^2 + 16t - 9t

= 11ts + 4t^2 + 7t

User Neil T
by
3.2k points