Which identity is the result of using the Pythagorean theorem to show that a triangle with side lengths X2-1, 2x, and x2+1 is a right triangle
Select the correct answer
(x2-1)2-(2x)2=(x2+1)2
(x2-1)2+(2x)2=(x2+1)2
(x2-1)2+(2x)2=-(x2+1)2
-(x2-1)2+(2x)2=(x2+1)2

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.