Question

x^2 + 25

Answer 1

options are
(x + 5)(x + 5)

(x + 5)(x − 5)

(x − 5)(x − 5)

Prime

I'm confused about the signs

Answer 2

This is a factoring problem, right?

Answer 3

x^2 + 25, this cant be factored.
it means, prime right ?

Answer 4

so when you add 2 squares it's prime

Answer 5

Correct.
The sum of two squares is prime.
The difference of two squares is the product of a sum and a difference.

Answer 6

Perhaps you haven't done it yet, but when you do cubes, then both the sum and the difference of two cubes are factorable.

Answer 7

Ooh I get it now thx

Answer 8

The difference of two squares factors into the product of a sum and a difference.
\(a^2 - b^2 = (a + b)(a - b) \)

The sum of two squares is prime.
\(a^2 + b^2 \)

The sum and difference of two cubes are both factorable:
\(a^3 + b^3 = (a + b)(a^2 - ab + b^2) \)
\(a^3 - b^3 = (a - b)(a^2 + ab + b^2)\)

Answer 9

Wlcm