Question

Evaluate -3x^2-4x=-1

Answer 1

Use the Quadratic formula,

x= -b +/- sqrt(b^2-4ac)
-------------------------
2a

x= 4 +/- sqrt(16+12)
----------------------
-6

x = 4+/- sqrt(28)
---------------
-6

x = 4 +/- 2*sqrt(7)
------------------
-6

x= 2(2+/- sqrt(7))
------------------
2(-3)


x= 2+/- sqrt(7)
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-3