SOLUTION: If {{{ sqrt(x^2-5x-11) +3=x }}} then what value is {{{ x^2-3x+3 }}} ? You have to solve for x first, and the answer I get is 7. I"m probably not doing it right though haha.

Algebra ->  Radicals -> SOLUTION: If {{{ sqrt(x^2-5x-11) +3=x }}} then what value is {{{ x^2-3x+3 }}} ? You have to solve for x first, and the answer I get is 7. I"m probably not doing it right though haha.       Log On


   

Question 589586: If +sqrt%28x%5E2-5x-11%29+%2B3=x+ then what value is +x%5E2-3x%2B3+ ? You have to solve for x first, and the answer I get is 7. I"m probably not doing it right though haha.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
+sqrt%28x%5E2-5x-11%29+%2B3=x+

+sqrt%28x%5E2-5x-11%29+=x-3+
square both sides
x%5E2-5x-11=%28x-3%29%5E2

x%5E2-5x%2B11=x%5E2-6x%2B9

x%5E2-x%5E2-5x%2B6x%2B11-9=0

X+2=0
x=-2









then what value is +x%5E2-3x%2B3+