Question

25/a² при а = -1
помогите помогите пж срочно​

Answer 1

$a=-1\\\\\frac{25}{a^{2} }=\frac{25}{(-1)^{2}}=\frac{25}{1}=\boxed{25}$

Answer 2

$\frac{25}{a^2} =\frac{25}{(-1)^2} =\frac{25}{1} =25$