Question

If a^2+b^2=c^2, does b^2-c^2=a^2 ?

Answer 1

almost but not quite. b^2-c^2=-(a^2)
You have to subtract the a^2 from both sides.

Answer 2

In my answer I was assuming that you were using c as the length of the hypotenuse (the longest side on a right triangle)

Answer 3

yeah, theres no picture so i kinda assumed that too, thanks(:

Answer 4

no it cannot be as the unsigned magnitude of c is greater then that of b from looking at first equation, so b^2 - c^2 will always be negative unless a was 0.