Question

Write a quadratic equation in standard form with the given roots: -1 and ½

Select one:
a. 2x2 + x + 1 = 0
b. -2x2 + x - 1 = 0
c. 2x2 - x - 1 = 0
d. 2x2 + x - 1 = 0

Answer 1

subtract x from each root, and foil the product ...

Answer 2

OR ... see which option is 0 when x=-1 and x=1/2

Answer 3

GOT IT