Seudónimo Seudónimo
  • 07-10-2016
  • Mathematics
contestada

can anybody tell me the answer to this im so confused

can anybody tell me the answer to this im so confused class=

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 07-10-2016
meh

ok so when have sqrt, try to square both sides
[tex] \sqrt{2x-1}=2+ \sqrt{x-4} [/tex]
square both sides
[tex] 2x-1=4+4 \sqrt{x-4}+x-4 [/tex]
[tex]2x-1=x+4 \sqrt{x-4} [/tex]
mnus x both sides
[tex]x-1=4 \sqrt{x-4} [/tex]
square oth sides
x^2-2x+1=16(x-4)
x^2-2x+1=16x-64
minus (16x-4) from both sides
x^2-18x+65=0
factor
(x-5)(x-13)=0
set each to zero
x-5=0
x=5

x-13=0
x=13

x=5 and 13

Answer Link

Otras preguntas

What are the powers of 3 in the range of 3 to 1,000?
My question is, what is:  log6(4x-8)=3
Suppose the population of a town is 15,200 and is growing 2% each year. Write an equation to model the population growth. Predict the population after 10 years
what were the patriots concerned about when the war was over and they had won
My question is, what is:  log6(4x-8)=3
Where would you expect the LEAST amount of tradeA. Where farms produce more than the farmers consume.B. Where hunting and fishing are the primary means of survi
Can someone help me with number 3?
please help me with this problem 3.14 = 22/7 and r = 7/4
The battles in the revolutionary war and the blanks aren't filled.
How much CaCl2, in grams, is needed to make 2.0 L of a 3.5M solution?