Alternatively, draw an equilateral triangle including the altitude. Two
congruent 30–60–90 triangles are formed. The sides in a 30–60–90 are in
a ratio of 23 . D
The expression 6 + (x − 2)^2 is at its minimum when (x − 2)^2 is at its
minimum value. Since the expression is squared, its minimum is zero. (x
− 2)^2 = 0 when x = 2.24 . E