Name: Factoring out GCF A. Finding GCF EX: Find the GCF of the following: 3
b. 28 p and 49
2
a. 8r and 64r 3
2
2
d. 56xw and 49xk
c. 12x y and 2x y B. Factoring Out GCF EX 1: Factor the following: a. 12bc − 4bd c. 56x y − 35x 5
5
b. 15x + 5x
d. 5x + 10x + 15
2
2
EX 2: A company’s weekly revenue in dollars is given by R = 2000x − 2x . Factor this. EX 3: The height of a projectile launched vertically upward from the top of a 96-‐foot tall tower is given by 2
h = −16t 2 + 80t + 96 . Factor this.
Beginning Algebra
The simplest schoolboy is now familiar with facts for which Archimedes would have sacrificed his life.~Ernest Renan
C. Solving for a Variable EX 1: Solve S = 2lw + 2lh + 2wh for l Get terms with variable solving for on _______ side of the equal sign. ______________ out the variable.
________________ for the variable.
EX 2: Solve S = a + Nd − d for d
Challenge: A group of students were polled to see which courses they were taking. 64% were taking English, 22% were taking a foreign language, and 7% were taking both. What percentage of students polled were taking neither subject?
Factoring out GCF.pdf
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