For questions 3-4, use the quadratic formula to find the roots. Calculation Tip:The coefficient of x2 represents the value of a, the coefficient of x represents the value of b, and the constant represents the value of c. 3. Use the quadratic formula to find the roots -2x² +11x=15. 4. Use the quadratic formula to find the roots of -3x² +27x-42. Page

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