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(5.42x10^2)—(2.1x10^-1) simplify and solve in scientific notation and please show work

(5.42x10^2)—(2.1x10^-1) simplify and solve in scientific notation and please show work
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(5.42x10^2)—(2.1x10^-1) simplify and solve in scientific notation and please show work

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User Mike Ramsey
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1 Answer

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542÷100×100-(21÷10)÷10

=542-0.21=541.79=5.4179×10²

answered
User Cactus Philosopher
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