Name: SAT Math Help & School Math Mastery
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#35592

factoring

algebra

medium

45 sec

For the expression $16 x^{2} + k x + 9$ to be a perfect square trinomial, what must be the value of $k$ ?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.