Mathematics for IGCSE & O level - Algebraic Manipulation (Section 5 - No. 3)
What is the next step after factoring out the common factor of 3 from 3x² - 12?
Complete the square
Apply the difference of squares to the remaining terms
Find two numbers that add up to -4 and multiply to 0
Use the quadratic formula
Paliwanag
The remaining expression x² - 4 can be factored using the difference of squares