Question 1121396: I am having a hard time understanding this problem. I am confused at what symbols they are referring to. I'm thinking it has to do with making a different expression using square roots, cubes, etc. Could you please help???
Here is the question:
Without grouping symbols, the expression 2 x 3^3+4 has a value of 58. Insert grouping symbols in the expression 2 x 3^3+4 to produce the indicated values.
a) 62
b) 220
c)4374
d)279,936
Found 3 solutions by josgarithmetic, MathTherapy, greenestamps:
Answer by josgarithmetic(39620)   (Show Source):
Answer by MathTherapy(10552)  (Show Source):
You can put this solution on YOUR website!
I am having a hard time understanding this problem. I am confused at what symbols they are referring to. I'm thinking it has to do with making a different expression using square roots, cubes, etc. Could you please help???
Here is the question:
Without grouping symbols, the expression 2 x 3^3+4 has a value of 58. Insert grouping symbols in the expression 2 x 3^3+4 to produce the indicated values.
a) 62
b) 220
c)4374
d)279,936
Answer by greenestamps(13200)  (Show Source):
You can put this solution on YOUR website!
The problem is NOT asking you to do anything with powers or square roots, or anything like that. It is only asking you to insert grouping symbols (parentheses) in the given expression to get the different results.
The given expression is
2*3^3+4
which is equivalent, according to standard rules of order of operations, to
2*(3^3)+4
or
(2*3^3)+4
Now put one or more sets of parentheses in different places to get different results. There are not many places you can do it....
(2*3)^3+4 = 6^3+4 = 216+4 = 220
(2*3)^(3+4) = 6^7 = 279936
2*(3^3+4) = 2(27+4) = 2(31) = 62
2*3^(3+4) = 2*3^7 = 2*2187 = 4374
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