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How do you evaluate #2(6div3-1)*1/2#?

Answer 1

Eva Adamson

#1#

Follow the #color(blue)"order of operations"# as set out in the acronym PEMDAS.

[Parenthesis (brackets) , Exponents (powers) , Multiplication , Division , Addition and Subtraction ]

Contents of bracket must be evaluated first.

#rArr(6÷3-1)=(2-1)=1larrcolor(red)"bracket"#

Expression can now be written as.

#2xx1xx1/2#

#=cancel(2)^1xx1xx1/cancel(2)^1=1larrcolor(red)"multiplication"#

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Answer 2

Nathan Axel

The expression evaluates to 3.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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