Posted by **crystal** on Sunday, January 11, 2009 at 9:24pm.

explain why (x + y)2= x2 + y2

- college algebra -
**Damon**, Sunday, January 11, 2009 at 9:37pm
If you are telling me that

(x+y)^2 = x^2 + y^2

That is not true

(x+y)^2 = x^2 + 2 x y + y^2

as you can see by multiplying

(x+y)(x+y) = x(x+y) + y(x+y) =x^2 + xy + xy + y^2

- college algebra -
**Damon**, Sunday, January 11, 2009 at 9:39pm
Now if you mean

2 (x + y) = 2 x + 2 y

that is simply the distributive property of multipication.

- college algebra -
**john**, Saturday, October 4, 2014 at 9:16pm
solc for v

[\sqrt;[6v-2]]=[\sqrt;[9v-8]]

## Answer this Question

## Related Questions

- statistics - At a small college it is known from previous years that 35% of all ...
- College Algebra - Can some please help me and explain this problem to me! Or if ...
- College Algebra - Use the definition of the logarithmic function to find x. (a) ...
- college algebra - Explain how to identify intervals on which a function ...
- college level algebra - I need to explain why subtracting a negative is like ...
- economic - College enrollments increased at the same time that average tuition ...
- college algebra - I you are given two real numbers, explain how to determine ...
- College Algebra - Solve 2x(squared)-3x-2=0 using the quadratic formula. Can ...
- college algebra - The graph of a power function is f(x)=kx^p, where k and p are...
- College Algebra - Solve the following equation in the complex number system x^4+...

More Related Questions