How can the addition of a parenthesis be used to increase the value of the following expression?: 12-3^4-2/7+1

1 Answer
Daniel L.
Apr 28, 2016

If you put the expression #12-3# in brackes, the value will increase.

Explanation:

The original expression is:

#12-3^4-2/7+1=12-81+5/7=-68 2/7#

If you put #12-3# in brackets the order of the operation changes, and so does the value:

#(12-3)^4-2/7+1#

Now first we have to calculate the value of expression in brackets:

#(12-3)^4-2/7+1=9^4-2/7+1=#
#6561-2/7+1=6560 5/7+1=6561 5/7#

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