SAT Math Practice Question #15143 - SATify | SATify
#15143
algebra
expressions
quadratic equations
medium
70 sec
The expression (x+21)(2x+23) is equivalent to ax2+bx+c, where a, b, and c are constants. What is the value of b?
• 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.