Answer if you know the answer. jeremy, the first triple you posted 13, 84, 85 is a pythagorean triple because all the numbers are integers and 132 + 842 = 852. the second triple 8, 15, 18 is not a pythagorean triple because the equation 82 + 152 = 182 is not true.

The first statement is true.

The second one is not true because 8^2 + 15^2 = 17^2   (NOT 18^2)

So the first and the second statement are both correct.

Step-by-step explanation:

Given expression :-

Since all the numerical coefficients -5,15,-25 are multiple of -5 and -5 is a negative number .

So, rewrite the above expression as:

  [since product of negatives is positive but product of negative and positive is always negative]

Since (-5) is same negative number in all the terms, so taking -5 outside, we get