# Intermediate Algebra

posted by .

Solve

x^2 + 3x + 3 = 0

-1 +- sq.rt 1-4 (1)(3)

-1 +- sq.rt 1-12 =

-1 +- i sq.rt 11/2

Is this correct?

• Intermediate Algebra -

no, I don't think you are using the quadratic formula correctly.
Do you have
for ax^2 + bx + c=0
x = (-b ±√(b^2 - 4ac)/(2a) ??

then for yours
x = (-3 ±√(9-4(1)(3))/2
= (-3 ±√-3)/2 which is a complex number

• Intermediate Algebra -

yes i have that formula

i thought i was told to just put in the numbers for the variables

• Intermediate Algebra -

but you did not put them in the right way.

• Intermediate Algebra -

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