Solve x2 + 6x + 7 = 0. Solve 3x2 + 4x = 2 Which of the following is a solution of x2 - 6x = -10? Which of the following is a solution of 3x2 - 5x = 1? 9x2 - 5x = - 3? If a football player passes a football from 4 feet off the ground with an initial velocity of 36 feet per second, how long will it take the football to hit the ground? Use the equation h = -16t2 + 36t + 4
@marcskeltah23 @ashlieghwhite @racer99 @raimj512 @charlotte123 @Cal3blikespie @carrie1996
Um.. I was summoned?
Yes, can you please answer my questions above?
@raimj512
I haven't done these types of problems since beginning of last year, so it'll take me a second, kay?
alright! @raimj512
Okay, since the first is a quadratic equation, you're trying to make 0 = 0, correct? so, look at x^2 + 6x + 7 x * x + 6 * x + 7 = 0 x =-1.5857864376269, x=4.41421356237309
alright, what about #2 @raimj512
Okay, so the second equation, needs to be turned into a quadratic equation, so 3x^2 + 4x = 2 3x^2 + 4x - 2 = 0 step 1) a = 3 , b = 4 and c = -2 fit that into the quadratic formula |dw:1382368199579:dw|
|dw:1382368431016:dw||dw:1382368555274:dw| can you do it from there?
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