lola27l
lola27l
07-01-2016
Mathematics
contestada
what are the solutions to x^2-13x+30
Respuesta :
kasperov1993
kasperov1993
07-01-2016
[tex]ax^2+bx+c=0 \\ \\ x^2-13x+30 = 0 \\ \\ D=b^2-4ac = 169-120=\sqrt{49} =7 \\ \\ x_{1/2} = \frac{-b^2+/-\sqrt{D}}{2a} = \frac{13+/-7}{2*1} \\ \\ x_1 = \frac{13+7}{2} = 10 \\ \\ x_2 = \frac{13-7}{2} = 3[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 84+ )
Otras preguntas
Pls help no links if u can pls explain the steps I’ll be grateful
Need help! I'm trying to figure out how was this solved?
what is the definition of origin
Need help?!?!?!?!?!?
8(4+2-6)+2(3) me podrían decir cómo se resuelve esta ecuación
Hellpppppppppp!!!!!!!! Find the first 4 terms of this sequence useing recursive definition
Select the two prepositional phrases. For every ten thousand high school ligsketball players, only one will have an opportunity to play in the NBA.
the following, which are required and recommended of police officer applicants? Check all that apply
True or False: (EXPLAIN your answer) If angle CEF is complementary to angle DCF, then angle DCF is congruent to angle FEG.
What is more important with immigration: Push Factors or Pull Factors?
