Multiple choice If log a = x - y and log b = x + y, then log 10b/a^2 will be in terms of x and y as 1 - x + y 1 - x - y 1 + x - y 1 + x + y None of these Reveal answer Fill a bubble to check yourself A Correct answer Explanation 1 + x + y - 2x + 2y = 1 - x + y