Solve x^2 - x = 2 using the quadratic formula. Show your work.

Question

Mathematics

Carley Hunter

22 November, 19:41

Solve x^2 - x = 2 using the quadratic formula. Show your work.

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Answers (1)

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Reed · Answer 1

The quadratic formula is the result of completing the square for ax^2+bx+c=0 when a, b, and c are unknown values. This result is:

x = (-b±√ (b^2-4ac)) / (2a), we have x^2-x-2=0 so

x = (1±√ (1+8)) / 2

x = (1±√9) / 2

x = (1±3) / 2

x=-1 and 2