Tag Archives: medium

SAT Question of the Day Explained – January 19, 2014 – Algebra

i <3 MathToday’s official SAT question of the day is a math question that involves two expressions that have been set equal to each other.  This medium-difficulty question looks tougher than it is, as long as we are careful with our signs and do not jump to conclusions. Let’s jump in.

√(x – a) = √(x + b)

First thing: square both sides to get rid of the silly radicals.  Now we are left with:

x – a = x + b

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