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Use the distributive property to expand the expression. 5(4r2 + 8s2) − (−3s + 5t) A) 20r2 + 40s2 + 3s − 5t B) 20r2 + 40s2 − 3s − 5t C) 20r2 + 40s2 − 3s + 5t D) 20r2 + 40s2 + 3s + 5t
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Use the distributive property to expand the expression. 5(4r2 + 8s2) − (−3s + 5t)

A) 20r2 + 40s2 + 3s − 5t
B) 20r2 + 40s2 − 3s − 5t
C) 20r2 + 40s2 − 3s + 5t
D) 20r2 + 40s2 + 3s + 5t

User Andriy Volkov
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2 Answers

3 votes
Choice A. Just distribute the 5 to 4r2 and 8s2 and you get 20r2+40s2. Then, you know there will be a 1 in -(-3s+5t). So you will get 3s-5t.
Final answer: 20r2+40s2+3s-5t
User Thomas Munk
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4 votes

5(4r2 + 8s2) − (−3s + 5t)

5* 4r^2 +5* 8s^2 - - 3s - 5t

20 r^2 + 40s^2+3s-5t


Choice A

User Umapathy
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