answersLogoWhite

0


Best Answer

-a2 differs from (-a)2 because the brackets change the order in which operations are done. Normally, exponents are handled before addition, subtraction, multiplication and division. This means that in the first expression, -a2, we are subtracting the square of the value a. In other words, our first expression could also be expressed as -(a × a). Brackets however are used to specify a set of operations that need to be done first. This means that our second expression would instead be broken down as (-a) × (-a).

The resulting difference between the two is that the first expression will always give us a negative number, and the second one will always give us a positive number (assuming imaginary numbers are not involved).

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why is -a squared in brackets different from -a squared?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How do you simplify x brackets x plus 1 brackets squared?

x[x+1] squared Simplified is, to my knowledge, x squared plus ( x + 1) squared


What are the different types of brackets?

The different types of brackets are: * round brackets, open brackets or parentheses: ( ) * square brackets, closed brackets or box brackets: [ ] * curly brackets, squiggly brackets, swirly brackets, braces, or chicken lips: { } * angle brackets, diamond brackets, cone brackets or chevrons: < > or &#10216; &#10217;


What is 4 squared plus 4 squared plus 4 squared equal?

Assuming the thing is as written and there are no brackets missed out then it is just 4 squared times 3 = 16x3=48.


What are the types of parentheses and brackets?

The different types of brackets are: * round brackets, open brackets or parentheses: ( ) * square brackets, closed brackets or box brackets: [ ] * curly brackets, squiggly brackets, swirly brackets, braces, or chicken lips: { } * angle brackets, diamond brackets, cone brackets or chevrons: < > or &#10216; &#10217;


What is 4 times 4 squared minus 7?

26 I got 57. First you do the exponents...4 squared=16 Next is multiplication...4 times 16=64 Finally minus 7...64-7=57. The answer would be different if there were brackets around part of the problem.


What is Bidmas?

B=Brackets i=Indices(Squared, Cubed ect.) d=division m=multplication a=Addition s=Subtraction Brackets Index Division Multiplication Add Subtract its great way to learnn.


Where do you put the brackets 4 plus 2 divided by 3 squared plus 1?

4 + (2/32) + 1


Are all LCD wall brackets the same?

"LCD wall brackets for TVs are all different. There are stationary, tilt, and swivel brackets for LCD TVs. The sizes and durability are also different, depending on your needs."


What is 7 to the power of 5 squared?

7 to the power of 5 squared would be written (75)2 Working the brackets first, you would take 7 to the power of 5, which is 7x7x7x7x7, giving 16,807 16,807 is then squared, and 16,807x16,807 = 282,475,249 so that would be your answer.


What is 14 x11.4 squared?

The importance of brackets... 14 x (11.4)2 = 1819.44 (14 x 11.4)2 = 25,472.16


Where do you put the brackets in the sum 1 plus 3squared plus 5squared equals 41?

1+32+52=41... The brackets go around the first part like this - (1+3)2+52=41 Because... 1+3=4 squared is 16, add that to 5 squared (25) equals 41.


What are indecies?

i think theyre squared numbers like 'bimdas' stands for brackets, indecies multiplication division, add and subtract. hope this helps :)