SOLUTION: solve the following equation using the quadratic formula and give answer in standard form 3x^2=-4x-20 (its been so long since ive had to use this formula that I almost forgot it) T
Question 199793: solve the following equation using the quadratic formula and give answer in standard form 3x^2=-4x-20 (its been so long since ive had to use this formula that I almost forgot it) Thanks for your help in advance! Answer by solver91311(24713) (Show Source):
The first thing you need to do is to put your equation into standard form, namely:
So just add to both sides
The quadratic formula is:
So just plug in the values of the coefficients:
And do the arithmetic.
The discriminant (the part under the radical) is negative in this case, so you will end up with a conjugate pair of complex roots. Just factor -1 out of the radicand and take out an which is defined as
