Mathematics for IGCSE & O level - Algebraic Manipulation (Section 1 - No. 32)
If you have the expression 4x² + 12x + 9, what is its factored form?
(2x + 3)(2x + 3)
(4x + 3)(x + 3)
(2x - 3)(2x - 3)
(4x - 9)(x - 1)
解释
This is a perfect square trinomial, the factored form is (2x + 3)².