Mathematics for IGCSE & O level - Equations (Section 8 - No. 3)
What is the relationship between the roots and the factors of a quadratic expression?
The roots are the same as the factors.
The roots are the negative of the factors.
The roots are the solutions when each factor equals zero.
There is no connection between the roots and the factors.
解释
The roots are found by setting each factor of the quadratic expression to zero.