SOLUTION: Solve the equation by completing the square.
a. Write irrational numbers in simplest radical form.
b. Describe each step as you go.
X^2 + 4x – 8 = 0
Algebra.Com
Question 456739: Solve the equation by completing the square.
a. Write irrational numbers in simplest radical form.
b. Describe each step as you go.
X^2 + 4x – 8 = 0
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
X^2 + 4x – 8 = 0
----
x^2 + 4x + ? = 8 + ?
----
x^2 + 4x + 4 = 8 + 4
-----
(x+2)^2 = 12
---
x+2 = +/-2sqrt(3)
------
x = -2+2sqrt(3) or x = -2-2sqrt(3)
=======================================
Cheers,
Stan H.
==============
RELATED QUESTIONS
Solve the equation by completing the square.
a. Write irrational numbers in simplest... (answered by stanbon)
2. Solve the equation by using the quadratic formula. Use √( ) and ± , if you... (answered by MathLover1)
1.Solve the equation, if possible. Write irrational numbers in simplest radical form.... (answered by parthdesai27)
Solve the equation x^2+16=0, if possible. Write irrational numbers in simplest radical... (answered by ikleyn)
Solve the equation x^2-4x+2=0 , if possible. Write irrational numbers in simplest radical (answered by Alan3354)
Use the quadratic formula to solve equation. Write irrational roots in the simplest... (answered by solver91311)