3. Find quadratic equation whose sum and product of roots are 2 and 7, respectively.

a. x² + 2x - 7 = 0

b. x² + 2x + 7 = 0

c. x² - 2x + 7 = 0

d. x² - 2x - 7 = 0



4. Find the equation if the roots are 4 and -1.

a. x² + 3x + 4 = 0

b. x² + 3x - 4 = 0

c. x² - 3x + 4 = 0

d. x² - 3x - 4 = 0

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