Friday

August 22, 2014

August 22, 2014

Posted by **Maria** on Tuesday, March 31, 2009 at 7:01pm.

My answer:

same as:

x - 7 = sqrt(2x+1)

==>

x^2 - 14x + 49 = 2x+1 ==>

x^2 - 16x + 48 = 0

split this up into:

(x - 12) * ( x - 4 ) = 0

so, x can technically be 12 or 4

12 - sqrt(24+1) does = 7

x=12

- Math -
**betty**, Tuesday, March 31, 2009 at 7:09pmwrong...

x^2 times (2x+1 )

equals 2x^3 + 2x^2 -7 =0

- Math -
**betty**, Tuesday, March 31, 2009 at 7:12pmohhh I'm so sorry. I misread the question...but your answer is still wrong

you would square both sides by 2

and then and up w/ 2x+1 = 49

- Math -
**Maria**, Tuesday, March 31, 2009 at 7:15pmWhat about the x?

- Math -
**Reiny**, Tuesday, March 31, 2009 at 7:49pmMaria, you are correct

x = 12 is the right answer, since x= 4 does not verify when you try it back in the original.

**Related Questions**

Math Help please!! - Could someone show me how to solve these problems step by ...

Inequality - When I solve the inquality 2x^2 - 6 < 0, I get x < + or - ...

Math(Roots) - sqrt(24) *I don't really get this stuff.Can somebody please help ...

Math - find any stationary points of the function g(x) = (2x-3)square root of 5+...

Math - How do you find a square root of a number that's not a perfect square? I'...

MATH - I need to simply this equation, but I got stuck. h/(4-sqrt(16+h)) = y ...

math,algebra,help - Directions are simplify by combining like terms. x radiacal ...

Mathematics - sqrt 6 * sqrt 8 also sqrt 7 * sqrt 5 6.92820323 and 5.916079783 So...

Calculus - Please look at my work below: Solve the initial-value problem. y'' + ...

calc - find the derivative of y = sqrt(9 - 16x) Use the chain rule. First find ...