Help with polynomial problem: Factor the following expression $x^4-16y^2+20x^2+25$

Question

Factor the following expression $$x^4-16y^2+20x^2+25$$

I try many times , couldn't solve it

Any help would be appreciated

Are you sure that it is $20x^2$ and not $10x^2$? – Sarvesh Ravichandran Iyer Aug 28 '17 at 10:34 — Sarvesh Ravichandran Iyer, Aug 28 '17 at 10:34
The expression isn't factorable. – Frank Aug 28 '17 at 14:22 — Frank, Aug 28 '17 at 14:22

score 3 · Accepted Answer · answered Aug 28 '17 at 10:34

3

hint: $x^4 + 10x^2+25 = (x^2+5)^2, 16y^2 = (4y)^2$. Did you check your problem for error? there seems to be one with the $20$. Should it be $10$ instead?

answered Aug 28 '17 at 10:34

DeepSea

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Help with polynomial problem: Factor the following expression $x^4-16y^2+20x^2+25$

1 Answers1