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anonymous
 4 years ago
Solve. 2x2 + 13x = –20
anonymous
 4 years ago
Solve. 2x2 + 13x = –20

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mathslover
 4 years ago
Best ResponseYou've already chosen the best response.1ok lemme give you a brief intro. to quadratic equation : \[\large{ax^2+bx+c=0}\] > general form of a quadratic equation

mathslover
 4 years ago
Best ResponseYou've already chosen the best response.1what do you think is the above equation , a quadratic equation?

mathslover
 4 years ago
Best ResponseYou've already chosen the best response.1ok good , so remember that the roots of a quadratic equation are : \[\large{roots =\frac{b\pm \sqrt{b^24ac}}{2a}}\]

mathslover
 4 years ago
Best ResponseYou've already chosen the best response.1put b = 13 , a = 2 and c = 20

mathslover
 4 years ago
Best ResponseYou've already chosen the best response.1ok .. see solve this now : \[\large{\frac{13\pm \sqrt{169160}}{4}}\] \[\large{\frac{13\pm \sqrt{9}}{4}}\]

mathslover
 4 years ago
Best ResponseYou've already chosen the best response.110/4 = 5/2 and 16/4 = 4

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Ohhh. Wait okay I see what I did wrong. Thank you!
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