Posted by **Karen** on Thursday, August 16, 2012 at 5:21pm.

What do the brackets mean in this problem?

a[(b-c)/d]-f

Am I suppose to times the answer of everything in the parenthesis by a?

- Math -
**MathMate**, Thursday, August 16, 2012 at 5:50pm
The brackets [] are superfluous if the formula is entered into an algebraic calculator or if calculated by someone who follows the rules of algebraic priorities (x and ÷ before + and -), and from left to right for operators of the same priority.

So

a[(b-c)/d]-f

is mathematically the same as

a(b-c)/d-f

But

x-3/x+2 is NOT the same as

(x-3)/(x+2)

In the second expression, the parentheses () force the subtraction and addition to be performed before the division. Without the parentheses, the mathematical meaning of the expression is then

x - (3/x) + 2

which is completely different.

## Answer This Question

## Related Questions

- Algebra - I'm trying to solve the problem: 6y-bracket 3y-(y+7)bracket. I got an ...
- Algebra 2.... - Simplify.(Is this problem more clear than the previous post?) ...
- Algebra 2 ... - * Simplify. a to the power of 4/3 times c ^1/6 all over 9b^3...
- Probability and statistic - Suppose X has an exponential distribution with mean ...
- math, correction,plz - Can someone correct these for me..plz... Problem #1 ...
- Math - I need need help with this math problem. I need to know do I start from ...
- Pre-Calc - An open box is formed by cutting squares out of a piece of cardboard ...
- college - Write a sentence of at least 150 words—no substituting semicolons or ...
- Statistics - Many times, we are required to use statistical measures to try and ...
- Geometry - When writing a math expression, any time there is an open bracket...

More Related Questions