what would (y-5)(y+5) be?

Question

I got y - 25 + y. That doesn't look right. I don't think it is.

Answer 1

(y-5)(y+5)
y(y+5) -5(y+5)
y^2+5y-5y-25
=y^2-25

y^2-25 is the correct answer.

Answer 2

What you have there is an example of the difference of squares. All you need to do is multiply the 2 y's together (so y^2) and multiply the -5 and 5 together (-25). Your answer is then y^2 - 25.

The longer way would be to use FOIL, which would give you:

y^2 +5y - 5y -25 which would simplify to y^2 - 25.

Answer 3

(y-5)(y+5)
=y²-5y+5y-25
=y²-25
I'll show it to you step by step.
it is known that there is no operation signs (ie + - ÷ × ) it would be a multiplication sign.
so that therefore means it is (y-5)×(y+5)
however you do not know wat the 'y' is so you have to you another method.
you could use the FOIL method (first, outer inner, last)
1)The first is the y's because the are the first in both brackets. You would multiply them together because it it (y)(y)
therefore it would be y² because it is yxy
2) the outher numbers are y and +5 because they are on outermost side of the equation. You would mulyiply cos is
(y)(+5)
therefore is 5y
so far it is y²+5y
3) the two inner numbers are -5 and y and you would multiply them
therefore it is -5y
so far the equation is y²+5y-5y
4) The last number in both brackets are -5 and +5. you multiply them and would get -25 (note. when multiplying a positive number to a negative number, the amswer would be negative)
so that therefor means the answer is y²+5y-5y-25
which is simplyfied to
y²-25
because when the pronumeral (y) is of equal value, but one is negative and the other positive it becomes 0

So i Believe the answer
y²-25
Is the CORRECT answer

Answer 4

y^2-25

Answer 5

(y-5)(y+5)
First you have to times the first set of numbers so y x y which equals y^2
Now you have to times the first y and the last 5. It'll give you 5y
Now you have to times the -5 by the y which will give you -5y
Next is to multiply the -5 by the positive 5.Which will give you -25.
Once you put all those numbers together it'll look like
y^2 + 5y - 5y -25
when you simplify it it will look like this
y^2 -25

Thast teh answer
You had to put together the like terms at the only like terms are 5y and -5y. Which will equal 0 so you take it out.

Answer 6

(y-5)(y+5) factors out to be y^2-25.
(The y is squared.)
I'll show this to you step-by-step.

To factor out a term, use FOIL. FOIL stands for "first, inner, outer, last".

First, you multiply the first term in each equation. For this one, it is y times y, which is y squared (y^2).

Next, you multiply the inner terms, which are -5 and y. You get -5y.

Then, you multiply the outer terms, which are y and 5. You get 5y.

Finally, you multiply the last terms, which are 5 and -5, and you get -25.

Add all the multiplied terms together. You get y^2 - 5y + 5y - 25.

-5y and 5y add together to get zero. So, you are left with y^2 - 25.

Answer 7

(y-5)(y+5)
use FOIL
First Outer Inner Last
(y-5)(y+5) = y^2 -5y 5y -25
= y^2 -25
And there are more ways to find out the answer!

Answer 8

y^2-25.

Use the FOIL method to figure out.

y(y)+
y(5)+
-5(y)+
-5(5)=
y^2 + 5y + (-5y) + (-25)
simplified is y^2 - 25

Answer 9

y=5?

Answer 10

it is y^2-25. Remember the basic formula for x^2-y^2 =(x+y)(x-y)