lunpi12 lunpi12
  • 24-03-2017
  • Mathematics
contestada

Solving radical equation

Solving radical equation class=

Respuesta :

jdoe0001 jdoe0001
  • 24-03-2017
[tex]\bf \sqrt{k-9}-\sqrt{k}=-1\implies \sqrt{k-9}=\sqrt{k}-1\impliedby \textit{squaring both sides} \\\\\\ (\sqrt{k-9})^2=(\sqrt{k}-1)^2\implies k-9=(\sqrt{k}-1)(\sqrt{k}-1)\impliedby \textit{FOIL} \\\\\\ k-9=k-2\sqrt{k}+1\implies -10=-2\sqrt{k}\implies \cfrac{-10}{-2}=\sqrt{k} \\\\\\ \sqrt{\cfrac{-10}{-2}}=k[/tex]
Answer Link

Otras preguntas

In The Tempest, which word describes Miranda A.cruel B. adventurous C. kind D. spiteful
Which of the following participants in the Korean War fought on the side of the Communists? a. China b. South Korea c. The United States d. The United Nations
Which expression represents the product of 83 and x
Who was forced to retreat to Taiwan? a. The Korean Nationalists b. The Korean Communists c. The Chinese Nationalists d. The Chinese Communists
Terry uses 3 cups of pumpkin seeds to decorate the tops of 12 loaves of bread. She puts an equal amount of seeds on each loaf. How many cups of pumpkin seeds do
If you increase the mass of an object, but keep the force on it constant, its acceleration decreases?
The sum of two prime numbers is 85. What is the product of these two prime numbers?
The evolutionary theory that suggests that a species can suddenly and rapidly evolve into a new species is genetic driftpunctuated equilibriumgradualism.
Of the major religions today, which two are monotheistic?
Which equivalent fractions can you use to find the sum of 2/8 + 3/9?