Mathematics for IGCSE & O level - Algebraic Manipulation (Section 3 - No. 23)
If you have an equation x² - 6x + 9 = 0, what are the solutions to this quadratic equation?
x = 3, x = -3
x = 3
x = 9
x = -9
คำอธิบาย
The equation can be factored to (x - 3)² = 0, meaning x = 3.