Wow i'm way to tired for math tonight....
Are these problems equivilent?
(10x-5)-(4x+2) and 10x-5-4x+2
2007-05-21 18:01:41 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
no they are not
(10x - 5) - (4x + 2) and 10x -5 -ax -2 are equivalent
you have to distribute the negative
2007-05-21 18:05:22 · answer #1 · answered by r 3 · 0⤊ 0⤋
No; the parentheses actually do something to change the expression. The expression on the left, if simplified enough to remove the parentheses, evaluates to 10x - 5 - 4x - 2. If the simplification is carried out completely, this expression evaluates to 6x -7. By comparison, the expression on the right simplifies to 6x - 3.
2007-05-22 01:12:29 · answer #2 · answered by devilsadvocate1728 6 · 0⤊ 0⤋
One of the most essential properties of real numbers that you should know is how to "distribute". That minus in front of the parentheses is actually a -1, and it needs to be multiplied by each term inside (terms are separated by "+" or "-"). So, no, they are not the same since the sign of the second term has not changed.
2007-05-22 01:07:33 · answer #3 · answered by Steve 5 · 0⤊ 0⤋
Nope. It should be
10x-5-4x-2
HTH
Doug
2007-05-22 01:07:41 · answer #4 · answered by doug_donaghue 7 · 0⤊ 0⤋
No
Ilusion
2007-05-22 01:06:31 · answer #5 · answered by Ilusion 4 · 0⤊ 0⤋