The expression is
.
The general factor trinomial form is
.
In the above trinomial,
.
Since c is positive and b is negative, you need to find two negative factors with a sum of
and a product of
.

Apply the pattern form:
when
.
because
.
Check:To check the solution by multiplying the two factors and this result should be equal to the original expression.
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Rewrite as the difference of two products.
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Apply distributive property:
.


Combine like terms.
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The factor form of expression is
.