Question

спростіть вираз 25-x²/10-2x​

Answer 1

$\frac{25-x^{2} }{10-2x} = \frac{(5-x)(5+x)}{2(5-x)} = \frac{5+x}{2}$

Answer 2

(25-х²)/(10-2х)=(5²-х²)/(2(5-х))=((5-х)(5+х))/(2(5-х))=(5+х)/2.