So, is this answer correct then? And what does ^ mean?

Question

1st question: x2 +8xy+16y2= (x+4) (x+4)
2 are squared. Is that correct then?
And I just asked a question and you guys really helped me but I don't get this

c^2 + 2cd + d^2 what are the ^ standing for? Because on my worksheet they aren't there. Thanks again guys you really are helpful!

Answer 1

There are no y's in the equation on the right, so either add a y to the right or delete it on the left. Then it should be correct.
x^2 + 8xy + 16y^2 = (x + 4y)(x + 4y) = (x + 4y)^2

OR

x^2 + 8x + 16 = (x + 4)(x +4) also written as (x + 4)^2


The ^ denotes that it's a power of (superscript). It's squared or raised to that number. Usually on computers there is no good way to show the square or cube of something quickly. So use ^ to show it's raised to this number.

Answer 2

1st question: x2 +8xy+16y2= (x+4y) (x+4y) [Corrected]
2 are squared. Is that correct then?
And I just asked a question and you guys really helped me but I don't get this

c^2 + 2cd + d^2 what are the ^ standing for?
c² + 2cd + d²

People use the carat (^) to indicate exponentiation, example a^6, because most don’t or can’t write a⁶. It’s also used in macros and some programming languages.

Answer 3

We use x^2 on here to indicate x² (which you have typed x2). Typing proper indices as small numbers is very fiddly.

If you multiply out the brackets in your factors, the result is:
x^2 + 8x + 16.
You have no y terms, but you are on the right track.
To get 16y^2 you need to change each of your 4s to 4y:
(x + 4y)(x + 4y) = x^2 + 8xy + 16y^2.
As with the earlier question, you can write this pair of factors as:
(x + 4y)^2.

Answer 4

The "^" mean "raise to the power" so x^2 is x squared, x^3 is x cubed etc.

If your first question is x^2 + 8xy + 16 y^2 = (x+4)(y+4) then that is correct, not (x+4)*(x+4).

Answer 5

Actually, x^2+8xy+16y^2 would equal (x+4y)^2

The symbol '^' generally means 'to the power of' so x^2 = 'x squared', etc..

Answer 6

^ means squared. Your first equation needs those symbols before the 2's to make them squared.

In computer-land we can't write in superscript here, so we use the accepted computer symbol for squaring.

Answer 7

x^2 is the same as saying x squared

you're close, the answer should be (x + 4y) (x + 4y) which is that same as (x+ 4y)^2

Answer 8

you missed y.
the true is: (x+4y)^2 or (x+4y)(x+4y)