Сократите дробь : 1) a^2-ax/a^2-x^2 2) x^2+2xy+y^2/2x^2-2y^2
1) (a² -ax) /(a² -x²) =a(a -x) /(a -x)(a +x) =a/(a +x) 2) (x² +2xy +y²) /2(x² -y²) =(x +y)² /2(x -y)(x +y) = =(x +y) /2(x -y)
Решите задачу: