christopherjohnperez christopherjohnperez
  • 16-12-2019
  • Mathematics
contestada

X divided by x+3 equals 4 divided by x+5

Respuesta :

Yang100
Yang100 Yang100
  • 16-12-2019

Answer:

x=-4, 3.

Step-by-step explanation:

x/(x+3)=4/(x+5)

cross product

4(x+3)=x(x+5)

4x+12=x^2+5x

x^2+5x-4x-12=0

x^2+x-12=0

factor out the trinomial,

(x+4)(x-3)=0

zero property,

x+4=0, x-3=0,

x=0-4=-4

x=0+3=3

Answer Link

Otras preguntas

List all factor for each number 100. 65. 70
Do you add them both together or multiply or do u put an equal sign between them? what is the sum of [tex] \frac{-x+7}{2x+4} [/tex] and[tex] \frac{2x+5}{2x+4} [
The vertex of the parabola y = x2 + 8x + 10 lies in Quadrant
what does it mean to be better 'hands down'?
what does 'hit the fan' mean?
What is the magnitude of the electric field at a point 0.0075 m from a 0.0035 C charge?
describe in your own words what is a 'fat cat'?
what is the wise fool?
Ions are electrically charged particles that are formed when certain compounds are dissolved in water. These solutions will conduct electricity. The Swedish sc
what is reflective writing?