1. Find all the solutions of the quadratic equations and inequalities, The set
of letters with each equation and inequality corresponds to a location in
the puzzle below.
Gh.
_y? + 9 = 0
Ac. 2x4-4x<0
Be.
9x7.
- 36x + 36 = 0
Eb.
-2x2 + 18x = 40
Hg. x2 + 12 = 8x
Kd.
2x2 - 7x = 15
Ge. 5x2 - 25x = 70
Ef. y3- 2x2 - 7x = 4
Cg. x2 - 2x + 1 = 0
Ke. -2x2 + 14x - 24 = 0
Da. y2 - 12x + 30 = 0
Ga. X2 - 9x = 9
Di_y2+3y>-3
2. Solve the puzzle using the solutions from above to fill in the empty squares for
pach location noted. For example. find Go above. Then use the rules below to
determine how to use the solution(s) to fill in the blank.
M If the salution has one nositive number. use the number
2. If the solution has two positive numbers, use the sum of the two answers.
3. If the solution has one positive and one negative, use the positive number.
4. If the solution is an interval, use the positive integer that satisfies X.
Complete the rest of the puzzle so that each number between 1 and 9 appears
exactly once in each row, column and 3 × 3 box.