2x2+9 = -41
2x2 = -41-9
2x2 = -50
x2 = -25
x = -5
Check: (2*-52)+9 = -41
Sorry, you can't have -5 as square root of -25.
x = 5i, where i is the imaginary square root of -1
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1+9+25=35 not 41, this is a false statement
It is 2x2 - 7x + 9
2*2+4x-9=0 4x=9-4 4x=5 x=5/4
If 2x2 + 3x + 9 = 0 then x = -0.75 - 1.984i or -0.75 + 1.984i where i is the imaginary square root of -1.
It works out that the centre of the circle is at (-0.5, 1.5) and its diameter is the square root of 28