Find the values of a, b, c, and d in this equation:
3x3 + 4x2 + 8x + 1

(x2 + x + 2)2 = ax + b

(x2 + x + 2) + cx + d

(x2 + x + 2)2

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

~dasgupta/mathbook/append17dec2k8.pdf