Name: SAT Math Help & School Math Mastery
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#31565

expressions

algebra

hard

90 sec

For all values of $x$ for which the expression is defined, the expression $\frac{2 x + 10}{x ^{2} + 7 x + 10}$ is equivalent to $\frac{2}{x + k}$ , where $k$ is a constant. What is 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.