brodienorred
brodienorred brodienorred
  • 12-11-2021
  • Mathematics
contestada

Solve each equation by completing the square.

X^2 +2x-5=0


N^2-20n+2=4

Respuesta :

reinhard10158
reinhard10158 reinhard10158
  • 15-11-2021

Step-by-step explanation:

x² + 2x - 5 = 0

that is the same as

x² + 2x + 1 = 6

(x + 1)² = 6

x + 1 = ±sqrt(6)

x = -1 ± sqrt(6)

x1 = -1 + sqrt(6)

x2 = -1 - sqrt(6)

n² - 20n + 2 = 4

this is the same as

(n - 10)² = 102

n - 10 = ±sqrt(102)

n = 10 ± sqrt(102)

n1 = 10 + sqrt(102)

n2 = 10 - sqrt(102)

Answer Link

Otras preguntas

The height of a wave from the equilibrium is 1 meter. Which parameter of the wave does this distance represent
1. How did the death of Archduke Franz Ferdinand instigate (urge on) the collapse of peace in Europe?
Which U.S. senator represented the South and argued that slavery was necessary? A. Henry Clay B. John C. Calhoun C. Daniel Webster D. Andrew Jackso
A powerful committee of the U.S. Senate charged with finding ways to raise federal revenues is the _______ Committee. A. Budget End of exam B. Appropriations C
what multiplies to -300 and adds to 13
Why was Spartan society focused on war?
How did Persian rulers unite their vast empire?
Which slogan best describes the overriding cultural belief expressed in the Declaration of Independence?
What is the volume 0.0023 moles of CO2
English has ___ main tenses and____ forms of each