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1. -1+-√49-(4 x 1 x -120) / 2
X = -1 +- √529 / 2
= -1 +- 23 / 2
X= 11 or x= -12
Is this correct?
2. (Original post by Custardcream000)
-1+-√49-(4 x 1 x -120) / 2
X = -1 +- √529 / 2
= -1 +- 23 / 2
X= 11 or x= -12
Is this correct?
You've got '-b' as '-1' but 'b^2' as 49.

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