Question

Factor

Answer 1

mn^2x^4 - (3mn + n) ax^2 + 3a^2

Answer 2

I get like m n x^2 (n x^2 -3 a) + a(n x^2 +3a)

Answer 3

so the answer be (m n x^2 + a)

Answer 4

But I am confuse about the

Answer 5

(n x^2 -3a) (n x^2 +3a)

Answer 6

Which bracket do I have to use

Answer 7

\[mn^2x^4-\left( 3mn+n \right)ax^2+3a^2=mn^2x^4-3mnax^2-nax^2+3a^2\]
\[mnx^2\left( nx^2-3a \right)-a \left( nx^2-3a \right)=\left( nx^2-3a \right)\left( mnx^2-a \right)\]