Question 29360
1.Squaring on both sides
16 = X-2
Adding 2 on both sides
18 = X

2.Dividing by 2 on both sides
{{{sqrt(X+3) = 5}}}
Squaring on both sides
X+3 = 25
Subtracting 3 on both sides
X = 22


3.Squaring on both sides
{{{X^2 = X+6}}}
{{{X^2 - X-6 = 0}}}
*[invoke quadratic "x", 1, -1, -6]

4.Subtracting 1 on both sides
{{{sqrt(X) = 4}}}
Squaring on both sides
X = 16