How do you solve x= 3- x \sqrt { 2}x=3x2?

1 Answer
Dec 14, 2017

x=3/(1+sqrt2)x=31+2

Explanation:

Solving equations is the isolation of the variable:

Since we already have xx on the left side, leave it that way.

Add xsqrt2x2 to both sides to get x+xsqrt2=3x+x2=3

The left hand side can be simplified by taking a factor of xx out:

(1+sqrt2)x=3(1+2)x=3

Now just divide both sides by (1+sqrt2)(1+2)

Therefore, x=3/(1+sqrt2)x=31+2