browns2018
browns2018 browns2018
  • 15-08-2016
  • Mathematics
contestada

9x=2x+14 how do u do this

Respuesta :

ZedIrl
ZedIrl ZedIrl
  • 15-08-2016
CROSS MULIPLY THE 2 X THEN ADD THE 14
Answer Link
jawuanjackson32
jawuanjackson32 jawuanjackson32
  • 15-08-2016

x=−7 and x=−2

Explanation:

to solve the quadratic you first have to put it into ax2+bx+c form
−9x=x2+14
to do that you have to add 9x on both sides
x2+9x+14
then you have to factor the quadratic
(x+7)(x+2)
then to find out the x values you have to set both of the factors to 0 and solve for x
x+7=0
x+2=0
subtract to get x by itself for both functions
x=−7 and x=−2

Answer Link

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