Mathematics for IGCSE & O level - Algebraic Manipulation (Section 4 - No. 19)
What is the first step in factoring the expression 2x² + 4x - 6?
Use the quadratic formula
Factor out the common factor
Find factors of -6
Complete the square
คำอธิบาย
The first step is to always look for a common factor (2 in this case).