Question

@GoldPhenoix @angie041397

Answer 1

@GoldPhenoix

Answer 2

We have :
\[\frac{7^2-1}{1-5^2}=\frac{49-1}{1-25}=\frac{48}{-24}=-2\]

Answer 3

nice explanation:) @Noura11

Answer 4

What Noura said. You simplify. 7^2 = 49
49-1 = 48
So the numerator is 48.
5^2 = 25
1-25 = -24
So it would simplify to -2.