Monday

July 28, 2014

July 28, 2014

Posted by **Juan** on Sunday, August 14, 2011 at 8:25pm.

sq root of (x+6) = x

- Algebra2 -
**Damon**, Sunday, August 14, 2011 at 8:36pm(x+6)^.5 = x

multiply both sides by (x+6)^.5

(x+6) = x(x+6)^.5 but (x+6)^.5 is x

so

x+6 = x^2

x^2 - x - 6 = 0

(x-3)(x+2) - 0

so x = 3 or x=-2

try x = 3

sqrt(9) = 3 sure enough

try x = -2

sqrt (4) = -2 nope, negative root does not check

so x = 3 is the answer.

**Related Questions**

Confused-Math - Your calculator gives an answer of x=1.1578074156, y=2E-13 when ...

Math simplifying mixed radicals - Please help me simplify these following mixed ...

Algebra - Use the quadratic formula to solve the equation. Give exact answers: ...

PLEASE READ - ATTENTION TEACHERS AND HELPERS I Am THE REAL Jon I'm not changing ...

Math simplifying mixed radicals - Please help me simplify these following mixed...

Calculus - solve (Z^2)+5=-4/Z^2 how do i solve it?? the answer is +2or-2, or, +...

english - Please don't just give me the answer, because I won't learn that way. ...

Calculus/Logarithms - Find the derivative of f(x) = (square root of x)(ln x). ...

Mathematics - Can someone explain to me how to solve complex fractions as if I ...

Math - 1)Solve sin2x=3cosx for all values of x. What do I need to do? 2)Solve e(...