Question

factorise the following x⁹ + y⁹​

Answer 1

Answer:

Let's break it down first. Using properties of exponents, I can rewrite this as:

x9+y9=(x3)3+(y3)3

The reason I rewrote this like this is because I know how to factor the sum of cubes:

u=x3

v=y3

So, now I just factor the following:

u3+v3=(u+v)(u2−uv+v2)

Now, plug x and y back in:

(x3+y3)((x3)2−(xy)3+(y3)2)

Then we can factor the first factor again:

((x+y)(x2−xy+y2))((x3)2−(xy)3+(y3)2)

=(x+y)(x2−xy+y2)(x6−x3y3+y6)

Answer 2

Answer:

xy 18 this is a simple answer mark me as a Brainlist