MPM2D1 Date: _______________ Day 3: Common Factoring Chapter 5: Quadratic Expressions 1 Warm-Up: The area of a park is given by the expression 16x 2 - 4x. If the length is given by the expression 4x, what is an expression for the width? So…what is a “Factor”? Factors are the numbers we multiply together to get another number: What is the Greatest Common Factor (GCF) ? It is the highest number that divides exactly into two or more numbers. Greatest Common Factor of 12 and 16 Find all the Factors of each number, Circle the Common factors, Choose the Greatest of those Greatest Common Factor of 24x 3 y 5 z and 36x 6 y 4 Find the GCF of the coefficients, Find the GCF of the variables, Multiply both terms to get your GCF. Factors of 24: Factors of 36: The GCF is _____ Recall: A = L × W