is 8 times 8 or 64, so we have 36 plus 64 equals x squared. Next 36 plus 64 is 100 and we have 100 equals x squared.
Now, to get x by itself, since x is squared we take the square root of both sides of the equation.
On the right the square root of x squared is x and on the left, since 100 is the perfect square 10 times 10, the square
root of 100 is 10.
So 10 equals x.
Notice that we don't use plus or minus 10 because x represents the length of the hypotenuse of the triangle which cannot
So the value of x is 10.