Wednesday

October 1, 2014

October 1, 2014

Posted by **jasmin** on Saturday, October 13, 2012 at 5:43pm.

- math..solve for u again. -
**Ms. Sue**, Saturday, October 13, 2012 at 5:50pmWhat part of my work don't you understand?

u - √2 = 3

u - 1.414 = 3

u = 4.414

- math..solve for u again. -
**jasmin**, Saturday, October 13, 2012 at 6:00pmthe answer should be 9

- math..solve for u again. -
**jasmin**, Saturday, October 13, 2012 at 6:01pmsorry. u-2√u=3

- yes, 9 is right -
**Damon**, Saturday, October 13, 2012 at 8:06pmlet x = sqrt u

then

x^2 - 2 x = 3

x^2 - 2 x - 3 = -

(x-3)(x+1) = 0

x = 3 or x = -1

try sqrt u = 3 then u = 9

9 - 6 = 3 Yes

try sqrt u = -3 , that is an imaginary number, forget it

so

u = 9

**Answer this Question**

**Related Questions**

Math - Help with radicals please - Please show work Simplify rational 1. 4√...

maths - I will be thankfull to you if you help me to solve the below problem: 6...

Math - Find an equation of the line that bisects the obtuse angles formed by the...

math grade 11 - i need help with this quretsion ; i dont know if im right, and i...

math grade 11 - i need help with this quretsion ; i dont know if im right, and i...

mat115 - Please help me with this math question. I am asked to show my work but ...

math - I am not sure how to do these. 1. Simplify 4√6/√30 by ...

math/algebra - can someone check my answer: 3486 my answer is 276 if not ...

Algebra - 1. √(9y - 196) + √196 = √49 My work: I squared all 3...

Dividing Radicals Problem!! - Divide the following radical and simplify the ...