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

Answer Link

Otras preguntas

Two diverging light rays, originating from the same point, have an angle of 5° between them. After the rays reflect from a plane mirror, what is the angle betwe

List all integers between -0.6 and 4.17 THANK U

If f(x) is 4x-3 what is (f^-1of) (10)

What is the probability of someone correctly guessing your Social Security number? (Assume all digits 0-9 are available for use)a

which foods earthworms can digest?

When MgCO3(s) is strongly heated, it produces solid MgO as gaseous CO2 is driven off.Does the oxidation number of carbon change upon the formation of CO2?

can u tell me how to solve this promblem 4/7 plus 3/7

Write a complete reaction of succinic acid and acetic anhydride

You shoot an arrow set a target. The parabolic path of the arrow passes through the points shown in table. X. Y 30. 6 60. 7 100. 4 A. Find a quadratic function

which of the following expressions does not equal: the sixth root of 81x^4y^8 a. (3xy^2)^2/3 b. (3x)^2/3y^4/3 c. (3x^2y^4)^1/3 d. cube root of 9x^2y^4