Question

Приведите дробь $frac{a}{x-2}$ к знаменателю:
a) 2-x; d) 4-4x+$x^{2}$
b) 0,5x-1; e) $x^{3}$-8
c) 4-$x^{2}$

Answer 1

a/(x-2)=-a/(2-x)
a/(x-2)=a(x-2)/(x-2)²
a/(x-2)=0,5a/(0,5x-1)
a/(x-2)=a(x²+2x+4)/(x³-8)
a/(x-2)=-a(x+2)/(4-x²)