ms6932
ms6932
02-03-2018
Mathematics
contestada
negative 1 over 2x + 2 = −x + 7
Respuesta :
sqdancefan
sqdancefan
03-03-2018
Multiply by the denominator and solve the resulting quadratic.
.. -1/(2x +2) = -x +7
.. -1 = (2x +2)(-x +7)
.. 2x^2 -12x -15 = 0
And from the quadratic formula
.. x = (12 ±√((-12)^2 -4(2)(-15)))/(2(2))
.. x = 3 ±√16.5
x ≈ -1.062019 or 7.062019
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