angelaisthebest1700
26.08.2019 •
Mathematics
What's the algebraic expression represents the phrase? cindy studied seven more hours than nikki studied. a. n + 7 b. 7 - n c. 7n d. n/7
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Ответ:
x²-1=0
Step-by-step explanation:
x²=1
x=-1 and +1