JennyLee JennyLee
  • 08-12-2014
  • Mathematics
contestada

Can you help me solve this radical equation √y-10 = y-2 the sqrt sign is only over the y-10

Respuesta :

konrad509
konrad509 konrad509
  • 08-12-2014
[tex]D:y-10\geq0 \wedge y-2\geq0\\ D:y\geq10 \wedge y\geq2\\ D:y\geq10\\\\ \sqrt{y-10}=y-2\\ y-10=(y-2)^2\\ y-10=y^2-4y+4\\ y^2-5y+14=0\\ \Delta=(-5)^2-4\cdot1\cdot14=25-56=-31\\ \Delta<0 \Rightarrow y\in \emptyset[/tex]
Answer Link

Otras preguntas

Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels 16 miles per hour slower than the westbound trai
The regular price of a child's entry ticket to a water park is $9 less than that for an adult's. The park offers half off all entry tickets during the off-peak
approximately how many 1 and 3/4 are in 7 5/8
effects that improvements in transportation had on the United States economy in the 1800s?
Biology - - 30 Points!! Why is it rare to find fossils of animals from before the Cambrian Period? What about these animals makes it rare for them to form fossi
In this passage, what does Wollstonecraft blame for some of the problems women face
Which object is created during the formation of a star?
How do you write 1 and 5 hundredths in standard form
Describe the process you would go through to move through the entire cycle
Very few of compositions written by _______ were published during his lifetime. A. Purcell B. Vivaldi C. Handel D. Bach