Mathematics for IGCSE & O level - Algebraic Manipulation (Section 5 - No. 21)
In the expression 2x² + 5x + 3, to factor, what should you look for first?
A common factor
Two numbers that sum to 5 and multiply to 3
Two numbers that sum to 5 and multiply to 6
The discriminant of the quadratic formula
คำอธิบาย
Always check for common factors first.