# Math Help - How to add Exponents

1. ## How to add Exponents

Hi all
my question is:
How to add Exponents with Different Base and Same Exponent
An Ex:

X2 + Y2

Thanks in advance

2. ## Re: How to add Exponents

Originally Posted by blackjack21
Hi all
my question is:
How to add Exponents with Different Base and Same Exponent
An Ex:

X2 + Y2

There is nothing that can be done with $x^2+y^2$, it is a prime expression, irreducible.

We can factor the difference $x^2-y^2=(x+y)(x-y)$ but not the sum.

3. ## Re: How to add Exponents

Hello, blackjack21!

Even if you had $x^2y^2$, there's nothing to be done.

Well, you could write it as: . $(xy)^2$ .. . . but that's all.

4. ## Re: How to add Exponents

thanks to all math family for answers and me again with another question about this subject

-(a2)+(2a)2 that gives me result of 3a2
what is the rule of this addition im confused with addition operation about exponents with factors

Thanks in advance and best regards..

5. ## Re: How to add Exponents

Originally Posted by blackjack21
-(a2)+(2a)2 that gives me result of 3a2
what is the rule of this addition im confused with addition operation about exponents with factors

If you understand that $-1+4=3$ then there is no additional rules to apply.