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PSYCHO15rus [73]
3 years ago
9

42. Use the Quadratic Equation to find the Roots of x2 + 3x - 3=0

Mathematics
1 answer:
almond37 [142]3 years ago
8 0

Answer:

Step-by-step explanation:

The coefficients of the x terms are {1, 3, -3}, so the discriminant, b^2 - 4ac, is 3^2 - 4(1)(-3), or 9 + 12, or 21.  The positive nature of the discriminant tells us that there are two real, unequal roots.  Following the quadratic formula, we get:

       -3 ± √21

x = -----------------

              2

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