Those usually mean the variable for the side length for a triangle.
Steps To Solve:
x² + 6 = 10
~Subtract 6 to both sides
x² + 6 - 6 = 10 - 6
~Simplify
x² = 4
~Take square root of 4
x² = ±√4
~Simplify
x = -2 or x = 2
Best of Luck!
$10.99 , divide 54.99 by 5 to get 10.99 for each shirt
5t = 25+2r
t = (25+2r)/5 or
t = 5 + (2/5)r
0.405, 0.45 , 0.5 , 4.5 : Least to greatest!