In Exercises 17 to 22, factor completely.
To factor completely:
Factorizing a polynomial is to express the polynomial as a product of simpler expressions such that each of the simpler expressions divides the polynomial completely and also the product of all the simpler expressions gives the polynomial.
First look for a common factor of the terms , and .
Thus, the of the terms , and is .
The given expression can be expressed as
Here, is distributed over the expression . By the reverse of distributive property of multiplication,
Now, factor the expression by the reverse FOIL method.
First factorize the product of the coefficient of the first tern and the constant, such that the sum of the factors gives the coefficient of the middle term
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