Answer: 4x²-9
Explanation:
Step 1 : Equation at the end of step 1 : 22x2 - 9.
Step 2 : Trying to factor as a Difference of Squares : 2.1 Factoring: 4x2-9. Check : 4 is the square of 2. Check : 9 is the square of 3. Check : x2 is the square of x1 Factorization is : (2x + 3) • (2x - 3)