Mathematics for IGCSE & O level - Algebraic Manipulation (Section 3 - No. 7)
In the factorization of x² - 5x + 6, what are the two numbers that multiply to 6 and add up to -5?
2 and 3
-2 and -3
6 and 1
-6 and -1
解释
-2 multiplied by -3 equals 6, and -2 + -3 = -5.