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anonymous
 4 years ago
Use the quadratic formula to solve x2 + 5x = –2
anonymous
 4 years ago
Use the quadratic formula to solve x2 + 5x = –2

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Hero
 4 years ago
Best ResponseYou've already chosen the best response.0rewrite it as x^2 +5x + 2 = 0

Hero
 4 years ago
Best ResponseYou've already chosen the best response.0a = 1 b = 5 c = 2 Plug that into the formula and solve

Hero
 4 years ago
Best ResponseYou've already chosen the best response.0By the way, the formula is \[x = \frac{b \pm \sqrt{b^24ac}}{2a}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[x^2 + 5x = 2 \] should be rearranged such the Right Hand Side (RHS) is 0. You can do that by adding 2 to both sides of the equation.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0That would make it \[x^2 + 5x + 2 = 0\] the quadratic formular is \[(b \pm \sqrt{b^2  4ac})/2a\] a is the coeffecient of x^2 so a = 1 b is the coeffecient of x so b = 5 c is the constant term so c = 2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0So my answer would be 5sqrt17/2?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Where would the 2 go?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You mean the 2 that was on the RHS ? It would come over to the LHS and become the constant term

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Oh sorry. My mistake. I see what you mean \[(5\pm \sqrt{17})/2\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I hope I got it right this time :)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Okay thank you so much :)
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