# Factoring using Difference of Two Squares:

Practice Problems

**Direction: **Factor out each binomial completely. Work it out on paper first then scroll down to compare your solution.

Problem 1: {x^2} - 100

Problem 2: 25{x^2} - 1

Problem 3: 4{x^2} - 9{y^2}

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Problem 4: 16{x^4} - {y^4}

Problem 5: {\left( {2x - 1} \right)^2} - 49

Problem 6: 4{x^2}{y^4} - 36{x^4}{y^2}

**ANSWER KEY**

**SOLUTION TO PROBLEM #1**

**SOLUTION TO PROBLEM #2**

**SOLUTION TO PROBLEM #3**

**SOLUTION TO PROBLEM #4**

**SOLUTION TO PROBLEM #5**

**SOLUTION TO PROBLEM #6**

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