TalaZakiAdnan TalaZakiAdnan
  • 03-10-2020
  • Mathematics
contestada

solve by completing the square: -14 + x^2 = 5x

Respuesta :

mhanifa
mhanifa mhanifa
  • 03-10-2020

Answer:

  • x = 7, x = -2

Step-by-step explanation:

Solving by completing square

  • -14 + x^2 = 5x
  • x^2 - 5x - 14 = 0
  • x^2 -2*2.5x + 6.25 - 20.25 = 0
  • (x -2.5)^2 = 20.25
  • (x - 2.5)^2 = 4.5^2
  1. x - 2.5 = 4.5 ⇒ x = 7
  2. x - 2.5 = -4.5 ⇒ x = -2
Answer Link

Otras preguntas

This state and river share a name, which comes from an Indian word meaning “Father of Waters.”
IDEAS FOR RECONSTRUCTION, explain why they are good ideas?
How many representatives are there in the House of Representatives?
What event took place to celebrate the signing of the Declaration of Independence? a. the Liberty Bell was rung b. an effigy of King George III was burned c
Who wrote the sonnet, “The New Colossus,” which is engraved on the pedestal of the Statue of Liberty?
What event took place to celebrate the signing of the Declaration of Independence? a. the Liberty Bell was rung b. an effigy of King George III was burned c
Please, look at the photo and give the ansver.
What was manorial system
What is English Literature??
How to find the inverse of the function f(x)=2x-3 ? Please