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What is the value of this expression when k=5? (3k)2 -10

User Virtuoso
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2 Answers

5 votes
first you expand the multiplication so it will be more easier to sub in later.
6k-10

sub in k=5 into the equation
6(5)-10=20
User Maresh
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2 votes
it is 20 if you plug in 5 for k
User Benjamin Gudehus
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