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The trinomial: x² - 5x +11 is not factorable. Explain why this is.

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User Mike Yan
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1 Answer

4 votes

Answer:

Explanation:

I cannot find 2 numbers that multiply to the last term (+11) and add to middle term (-5)

So it can't be factored that way.

After further inspection. i try to plug it into b²-4ac from the quadratic formula.

b=-5

c=11

(-5)²-4(1)(11)

= -19 you can never get a negative under the square root. so this quadratic will produce 2 imaginary solutions. so it is not factorable.

answered
User Joseph Dattilo
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7.9k points

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