Question
Identify the value of c that would make the trinomial factorable using the perfect-square pattern.
x2 + 24x + c
- 144
- 169
- 576
- 196
The correct answer is: 144
Using the pattern (a + b)2 = a2 + 2ab + b2,
(x)2 + 2(x)(12) + (12)2 = (x + 12)2
So, c = 122 = 144
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