Mathematics for IGCSE & O level - Algebraic Manipulation (Section 5 - No. 17)
For the expression x² + 8x + 16, what is the factored form?
(x + 2)(x + 8)
(x + 4)(x + 4)
(x + 1)(x + 16)
(x - 4)(x - 4)
解释
The expression factors to (x + 4)(x + 4) or (x + 4)².