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Question
Solve the following equation using the formula:
3x2 + 2x – 1 = 0
Solution
3x2 + 2x – 1 = 0
Here a = 3, b = 2 and c = −1
Then `x = (-b +- sqrt(b^2 - 4ac))/(2a)`
= `(-(2) +- sqrt((2)^2-4(3)(-1)))/(2(3)`
= `(-2 +- 4)/6`
= `(-2 + 4)/6` and `(-2 - 4)/6`
= `1/3` and −1
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