# SOLUTION: x^4-5x^2-36 Help me. How do you factorize this problem?

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 Question 596272: x^4-5x^2-36 Help me. How do you factorize this problem?Found 3 solutions by jim_thompson5910, Edwin McCravy, josmiceli:Answer by jim_thompson5910(28476)   (Show Source): You can put this solution on YOUR website! See Note at bottom So completely factors to Note: the numbers -9 and 4 multiply to -36 (the last number) and add to -5 (the second coefficient) Answer by Edwin McCravy(8879)   (Show Source): You can put this solution on YOUR website!```x4 - 5x² - 36 (x² - 9)(x² + 4) (x - 3)(x + 3)(x² + 4) Edwin``` Answer by josmiceli(9645)   (Show Source): You can put this solution on YOUR website! Let Complete the square Take the square root of both sides and, also ------------- The factoring is and, since This can be further factored into