Answer:
I just took the test here's the answer
Explanation:
Use the quadratic formula
x = [-b +- sqr root (b^2 - 4*a*c)] / 2a
x = [-3 +- sqr root (9 - 4*1*-7)] / 2
x = (-3 +- sqr root (37) / 2
x1 = 1.5414
x2 = -4.5414
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