4-3 Solving Quadratic Equations by Factoring
19.
SOLUTION:
Write the pattern.
Replace p and q with
Use the FOIL method to multiply.
Multiply each side by 5.
Factor each polynomial.
21.
SOLUTION:
The GCF of the two terms is 17c. Factor the GCF.
23.
SOLUTION:
Factor out 3.
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Use the identity a
– b
= (a + b)(a – b) to factor x
– 4.