SAT Math Practice Question #35314 - SATify | SATify
#35314
expressions
factoring
algebra
hard
90 sec
If (ax−b)(ax+b)=25x2−81 for all values of x, where a and b are positive constants, what is the value of a+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.
