Question

Amplifica rapoartele urmatoare ,pentru a le aduce la acelasi numitor
a) 1 supra 3x-1
x supra 3x+1
b) 2 supra 2y +y^2
4 supra y^2 -4
c),x supra x^2-4
2supra x^2 +4x+4
1 supra x+2

Answer 1

a)  1/(3x-1) =(3x+1)/(3x-1)(3x+1)=(3x+1)/(9x²-1)
     1/(3x+1) =(3x-1)/(3x-1)(3x+1)=(3x-1)/(9x²-1)
b)  2/(2y+y²)=2/y(y+2)=2(y-2)/y(y²-4)
     4/(y²-4)=4/(y+2)(y-2)=4y/y(y²-4)
c)  x/(x²-4)=x/(x+2)(x-2)=x(x+2)/(x+2)²(x-2)
     2/(x²+4x+4)=2/(x+2)² =2(x-2)/(x+2)²(x-2)
     1/(x+2)=(x+2)(x-2)/(x+2)²(x-2)