math help plz?

Question

square root of a^2 +b^2

Answer 1

That expression does not simplify.

The simplest form it has is √ (a² + b² )

a^n + b^n cannot be simplified if n is even.

For odd powers, it can. For example:

a³ + b³ = (a+b)(a² - ab + b²)

See also:
http://en.wikipedia.org/wiki/Difference_of_squares
for the case a² - b²

and see: http://en.wikipedia.org/wiki/Cyclotomic_polynomial#Cyclotomic_polynomials
for some more complicated factorizations of a^n - 1, which can be generalized to a^n - b^n

Answer 2

hey im just a 7 yea old kid and i can tell you that the square root of a^2 +b^2 is not yet thought in my class

Answer 3

a^2+b^2 cannot be simplified.
a^2-b^2=(a-b)(a+b),