Mathematics for IGCSE & O level - Equations (Section 8 - No. 43)
If you have an equation in the form ax² + bx + c = 0, which part of the equation determines whether you'll have two solutions, one solution, or no real solutions?
The 'a' value
The 'b' value
The discriminant (b² - 4ac)
The constant 'c' value
解释
The discriminant (b² - 4ac) determines the number and nature of roots.