Question

Please factorise: a^4+3a^2+4

Answer 1

Hello Mate!

${a}^{4} + 3 {a}^{2} - 4 \\ {a}^{4} + 4 {a}^{2} - {a}^{2} - 4 \\ {a}^{2} ( {a}^{2} + 4) - 1( {a}^{2} + 4) \\ ( {a}^{2} - 1)( {a}^{2} + 4)$

I think there is a small error in the question.

Hope it helps!☺

Answer 2

Answer:

(a^2 -1)(a^2+4)

hope it is useful