Question

Identify the factors of x2 + 25y2.

(x + 5y)(x + 5y)

(x + 5y)(x − 5y)

(x − 5y)(x − 5y)

Prime

Answer 1

Hint: Any equation of the form ax^2+bY^2 has only complex roots provided both constants are positive.. Please note; We can factor ax^2-by^2 because the difference of the squares causes the middle term to drop out and this is not true with the later.