Solve the equation. Use factoring or the quadratic formula, whichever is appropriate. (Try factoring first. If you have any difficulty factoring, then go right to the quadratic formula.) 
r = __________
Correct Answer:
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Q62: Multiply both sides of the equation by
Q63: Solve the equation using the quadratic formula.
Q64: Look for the greatest common factor, then
Q65: Use the discriminant to find the number
Q66: Use the discriminant to find the number
Q68: Use the discriminant to find the number
Q69: Multiply both sides of the equation by
Q70: Solve the equation. Q71: Use the discriminant to find the number Q72: Use the discriminant to find the number
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